【谷粒学院】007-条件查询分页、添加讲师、查询讲师、修改讲师、统一异常处理、统一日志处理

一时失言乱红尘 2023-10-05 15:10 40阅读 0赞

**目录**

一、条件查询分页

1、创建查询对象

2、在TeacherService中编写条件查询分页方法

3、在实现类TeacherServiceImpl中编写方法体

4、在Controller中实现具体方法

补充：

5、在Swagger测试

请求参数：

响应结果：

二、添加、查询、修改讲师

1、封装自动填充

在service-base模块中添加：

在实体类添加自动填充注解：

2、在controller添加方法

新增、根据id查询、根据id修改：

3、在Swagger测试

添加：

查询：

修改：

三、统一异常处理

1、什么是统一异常处理

制造异常：

结果：

2、统一异常处理

第一步：在service\_base中引入common\_utils

第二步：创建统一异常处理器

第三步：测试

3、处理特定异常

4、自定义异常

第一步：创建自定义异常类

第二步：在业务中需要的位置抛出GuliException

第三步：在GlobalExceptionHandler添加异常处理方法

第四步：测试

四、当前项目源码

五、统一日志处理（补）

1、日志

配置日志级别：

2、Logback日志

配置logback日志：

效果：

3、将错误日志输出到文件

制造错误：

Swagger测试：

日志文件：

4、将日志堆栈信息输出到文件

调用：

GuliException中创建toString方法：

--------------------

# 一、条件查询分页 #

根据讲师名称name，讲师头衔level、讲师入驻时间gmt\_create（时间段：开始、结束）查询；

## 1、创建查询对象 ##

创建com.zibo.edu.entity.vo包，创建TeacherQuery.java查询对象

package com.zibo.edu.entity.vo;
    
    import io.swagger.annotations.ApiModel;
    import io.swagger.annotations.ApiModelProperty;
    import lombok.Data;
    
    import java.io.Serializable;
    
    @ApiModel(value = "Teacher查询对象", description = "讲师查询对象封装")
    @Data
    public class TeacherQuery implements Serializable {
        private static final long serialVersionUID = 1L;
        @ApiModelProperty(value = "教师名称,模糊查询")
        private String name;
        @ApiModelProperty(value = "头衔 1高级讲师 2首席讲师")
        private Integer level;
        @ApiModelProperty(value = "查询开始时间", example = "2019-01-01 10:10:10")
        private String begin;//注意，这里使用的是String类型，前端传过来的数据无需进行类型转换
    
        @ApiModelProperty(value = "查询结束时间", example = "2019-12-01 10:10:10")
        private String end;
    }

## 2、在TeacherService中编写条件查询分页方法 ##

package com.zibo.edu.service;
 
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.zibo.edu.entity.Teacher;
 import com.baomidou.mybatisplus.extension.service.IService;
 import com.zibo.edu.entity.vo.TeacherQuery;
 
 /**
 * 
 * 讲师 服务类
 * 
 *
 * @author zibo
 * @since 2020-11-30
 */
 public interface TeacherService extends IService<Teacher> {
 void pageQuery(Page<Teacher> pageParam, TeacherQuery teacherQuery);
 }

## 3、在实现类TeacherServiceImpl中编写方法体 ##

package com.zibo.edu.service.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.toolkit.StringUtils;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.zibo.edu.entity.Teacher;
 import com.zibo.edu.entity.vo.TeacherQuery;
 import com.zibo.edu.mapper.TeacherMapper;
 import com.zibo.edu.service.TeacherService;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.stereotype.Service;
 
 /**
 * 
 * 讲师 服务实现类
 * 
 *
 * @author zibo
 * @since 2020-11-30
 */
 @Service
 public class TeacherServiceImpl extends ServiceImpl<TeacherMapper, Teacher> implements TeacherService {
 
 @Override
 public void pageQuery(Page<Teacher> pageParam, TeacherQuery teacherQuery) {
 QueryWrapper<Teacher> queryWrapper = new QueryWrapper<>();
 queryWrapper.orderByAsc("sort");
 if (teacherQuery == null){
 baseMapper.selectPage(pageParam, queryWrapper);
 return;
 }
 String name = teacherQuery.getName();
 Integer level = teacherQuery.getLevel();
 String begin = teacherQuery.getBegin();
 String end = teacherQuery.getEnd();
 if (!StringUtils.isEmpty(name)) {
 queryWrapper.like("name", name);
 }
 if (!StringUtils.isEmpty(level+"") ) {
 queryWrapper.eq("level", level);
 }
 if (!StringUtils.isEmpty(begin)) {
 queryWrapper.ge("gmt_create", begin);
 }
 if (!StringUtils.isEmpty(end)) {
 queryWrapper.le("gmt_create", end);
 }
 baseMapper.selectPage(pageParam, queryWrapper);
 }
 }

## 4、在Controller中实现具体方法 ##

package com.zibo.edu.controller;
 
 
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.zibo.commonutils.R;
 import com.zibo.edu.entity.Teacher;
 import com.zibo.edu.entity.vo.TeacherQuery;
 import com.zibo.edu.service.TeacherService;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import io.swagger.annotations.ApiParam;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
 
 /**
 * 
 * 讲师 前端控制器
 * 
 *
 * @author zibo
 * @since 2020-11-30
 */
 @RestController
 @RequestMapping("/edu/teacher")
 @Api(tags = {"教师管理模块TeacherController"})
 public class TeacherController {
 @Autowired
 private TeacherService teacherService;
 
 //查询所有
 @ApiOperation("查询所有")
 @RequestMapping("/findall")
 public R findAll(){
 return R.ok().data("items", teacherService.list(null));
 }
 
 //逻辑删除
 @ApiOperation("逻辑删除")
 @RequestMapping("{id}")//id通过路径传过来
 // @DeleteMapping("{id}")
 public R hide(@ApiParam("要删除教师的ID") @PathVariable("id")String id){
 boolean flag = teacherService.removeById(id);
 if(flag){
 return R.ok();
 }else {
 return R.error();
 }
 }
 
 @ApiOperation(value = "分页讲师列表")
 @RequestMapping("{page}/{limit}")
 public R pageList(
 @ApiParam(name = "page", value = "当前页码", required = true)
 @PathVariable Long page,
 @ApiParam(name = "limit", value = "每页记录数", required = true)
 @PathVariable Long limit){
 Page<Teacher> pageParam = new Page<>(page, limit);
 teacherService.page(pageParam, null);
 List<Teacher> records = pageParam.getRecords();
 long total = pageParam.getTotal();
 return R.ok().data("total", total).data("rows", records);
 }
 
 @ApiOperation(value = "条件查询分页讲师列表")
 @RequestMapping("pageTeacherCondition/{page}/{limit}")
 public R pageTeacherCondition(
 @ApiParam(name = "page", value = "当前页码", required = true)
 @PathVariable Long page,
 @ApiParam(name = "limit", value = "每页记录数", required = true)
 @PathVariable Long limit,
 @RequestBody
 @ApiParam(name = "teacherQuery", value = "查询条件")//可以没有
 TeacherQuery teacherQuery){
 Page<Teacher> pageParam = new Page<>(page, limit);
 teacherService.pageQuery(pageParam, teacherQuery);
 List<Teacher> records = pageParam.getRecords();
 long total = pageParam.getTotal();
 return R.ok().data("total", total).data("rows", records);
 }
 }

### 补充： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70][]

## 5、在Swagger测试 ##

### 请求参数： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 1][]

### 响应结果： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 2][]

# 二、添加、查询、修改讲师 #

（新增、根据id查询、根据id修改）

## 1、封装自动填充 ##

### 在service-base模块中添加： ###

创建包handler，创建自动填充类 MyMetaObjectHandler

package com.zibo.servicebase.handler;
    
    import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
    import org.apache.ibatis.reflection.MetaObject;
    import org.springframework.stereotype.Component;
    
    import java.util.Date;
    
    @Component
    public class MyMetaObjectHandler implements MetaObjectHandler {
        @Override
        public void insertFill(MetaObject metaObject) {
            this.setFieldValByName("gmtCreate", new Date(), metaObject);
            this.setFieldValByName("gmtModified", new Date(), metaObject);
        }
    
        @Override
        public void updateFill(MetaObject metaObject) {
            this.setFieldValByName("gmtModified", new Date(), metaObject);
        }
    }

### 在实体类添加自动填充注解： ###

package com.zibo.edu.entity;
 
 import com.baomidou.mybatisplus.annotation.*;
 
 import java.util.Date;
 import java.io.Serializable;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.experimental.Accessors;
 
 /**
 * 
 * 讲师
 * 
 *
 * @author zibo
 * @since 2020-11-30
 */
 @Data
 @EqualsAndHashCode(callSuper = false)
 @Accessors(chain = true)
 @TableName("edu_teacher")
 @ApiModel(value="Teacher对象", description="讲师")
 public class Teacher implements Serializable {
 
 private static final long serialVersionUID = 1L;
 
 @ApiModelProperty(value = "讲师ID")
 @TableId(value = "id", type = IdType.ID_WORKER)
 private String id;
 
 @ApiModelProperty(value = "讲师姓名")
 private String name;
 
 @ApiModelProperty(value = "讲师简介")
 private String intro;
 
 @ApiModelProperty(value = "讲师资历,一句话说明讲师")
 private String career;
 
 @ApiModelProperty(value = "头衔 1高级讲师 2首席讲师")
 private Integer level;
 
 @ApiModelProperty(value = "讲师头像")
 private String avatar;
 
 @ApiModelProperty(value = "排序")
 private Integer sort;
 
 //逻辑删除
 @ApiModelProperty(value = "逻辑删除 1（true）已删除， 0（false）未删除")
 private Integer isDeleted;
 
 @ApiModelProperty(value = "创建时间")
 @TableField(fill = FieldFill.INSERT)
 private Date gmtCreate;
 
 @ApiModelProperty(value = "更新时间")
 @TableField(fill = FieldFill.INSERT_UPDATE)
 private Date gmtModified;
 
 
 }

## 2、在controller添加方法 ##

### 新增、根据id查询、根据id修改： ###

package com.zibo.edu.controller;
 
 
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.zibo.commonutils.R;
 import com.zibo.edu.entity.Teacher;
 import com.zibo.edu.entity.vo.TeacherQuery;
 import com.zibo.edu.service.TeacherService;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import io.swagger.annotations.ApiParam;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
 
 /**
 * 
 * 讲师 前端控制器
 * 
 *
 * @author zibo
 * @since 2020-11-30
 */
 @RestController
 @RequestMapping("/edu/teacher")
 @Api(tags = {"教师管理模块TeacherController"})
 public class TeacherController {
 @Autowired
 private TeacherService teacherService;
 
 //查询所有
 @ApiOperation("查询所有")
 @RequestMapping("/findall")
 public R findAll() {
 return R.ok().data("items", teacherService.list(null));
 }
 
 //逻辑删除
 @ApiOperation("逻辑删除")
 @RequestMapping("{id}")//id通过路径传过来
 // @DeleteMapping("{id}")
 public R hide(@ApiParam("要删除教师的ID") @PathVariable("id") String id) {
 boolean flag = teacherService.removeById(id);
 if (flag) {
 return R.ok();
 } else {
 return R.error();
 }
 }
 
 @ApiOperation(value = "分页讲师列表")
 @RequestMapping("{page}/{limit}")
 public R pageList(
 @ApiParam(name = "page", value = "当前页码", required = true)
 @PathVariable Long page,
 @ApiParam(name = "limit", value = "每页记录数", required = true)
 @PathVariable Long limit) {
 Page<Teacher> pageParam = new Page<>(page, limit);
 teacherService.page(pageParam, null);
 List<Teacher> records = pageParam.getRecords();
 long total = pageParam.getTotal();
 return R.ok().data("total", total).data("rows", records);
 }
 
 @ApiOperation(value = "条件查询分页讲师列表")
 @RequestMapping("pageTeacherCondition/{page}/{limit}")
 public R pageTeacherCondition(
 @ApiParam(name = "page", value = "当前页码", required = true)
 @PathVariable Long page,
 @ApiParam(name = "limit", value = "每页记录数", required = true)
 @PathVariable Long limit,
 @RequestBody
 @ApiParam(name = "teacherQuery", value = "查询条件")//可以没有
 TeacherQuery teacherQuery) {
 Page<Teacher> pageParam = new Page<>(page, limit);
 teacherService.pageQuery(pageParam, teacherQuery);
 List<Teacher> records = pageParam.getRecords();
 long total = pageParam.getTotal();
 return R.ok().data("total", total).data("rows", records);
 }
 
 @ApiOperation(value = "新增讲师")
 @RequestMapping
 public R save(
 @ApiParam(name = "teacher", value = "讲师对象", required = true)
 @RequestBody Teacher teacher) {
 teacherService.save(teacher);
 return R.ok();
 }
 
 @ApiOperation(value = "根据ID查询讲师")
 @RequestMapping("/find/{id}")
 public R getById(
 @ApiParam(name = "id", value = "讲师ID", required = true)
 @PathVariable String id) {
 Teacher teacher = teacherService.getById(id);
 return R.ok().data("item", teacher);
 }
 
 @ApiOperation(value = "根据ID修改讲师")
 @RequestMapping("/update/{id}")
 public R updateById(
 @ApiParam(name = "id", value = "讲师ID", required = true)
 @PathVariable String id,
 @ApiParam(name = "teacher", value = "讲师对象", required = true)
 @RequestBody Teacher teacher) {
 teacher.setId(id);
 teacherService.updateById(teacher);
 return R.ok();
 }
 }

## 3、在Swagger测试 ##

### 添加： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 3][]

数据库：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 4][]

### 查询： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 5][]

### 修改： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 6][]

数据库：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 7][]

# 三、统一异常处理 #

## 1、什么是统一异常处理 ##

### 制造异常： ###

除以0

int a = 10/0;

### 结果： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 8][]

**我们想让异常结果也显示为统一的返回结果对象，并且统一处理系统的异常信息，那么需要统一异常处理；**

## 2、统一异常处理 ##

### 第一步：在service\_base中引入common\_utils ###

<?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <parent>
 <artifactId>common</artifactId>
 <groupId>com.zibo</groupId>
 <version>0.0.1-SNAPSHOT</version>
 </parent>
 <modelVersion>4.0.0</modelVersion>
 
 <artifactId>service_base</artifactId>
 <dependencies>
 <dependency>
 <groupId>com.zibo</groupId>
 <artifactId>common_utils</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 </dependency>
 </dependencies>
 
 </project>

### 第二步：创建统一异常处理器 ###

在service-base中创建统一异常处理类GlobalExceptionHandler.java：

### 第三步：测试 ###

返回同意的错误结果：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 9][]

## 3、处理特定异常 ##

（只需要使用 @ExceptionHandler设置对应异常类即可）

package com.zibo.servicebase.handler;
    
    import com.zibo.commonutils.R;
    import org.springframework.web.bind.annotation.ControllerAdvice;
    import org.springframework.web.bind.annotation.ExceptionHandler;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    /**
     * 统一异常处理类
     */
    @ControllerAdvice
    public class GlobalExceptionHandler {
        @ExceptionHandler(Exception.class)//指定出现什么异常执行这个方法
        @ResponseBody//为了返回数据
        public R error(Exception e){
            e.printStackTrace();
            return R.error();
        }
    
        @ExceptionHandler(ArithmeticException.class)
        @ResponseBody
        public R error(ArithmeticException e){
            e.printStackTrace();
            return R.error().message("执行了自定义异常");
        }
    }

## 4、自定义异常 ##

### 第一步：创建自定义异常类 ###

package com.zibo.servicebase.exception;
    
    import io.swagger.annotations.ApiModelProperty;
    import lombok.AllArgsConstructor;
    import lombok.Data;
    import lombok.NoArgsConstructor;
    
    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class GuliException extends RuntimeException {
        @ApiModelProperty(value = "状态码")
        private Integer code;
        private String msg;
    }

### 第二步：在业务中需要的位置抛出GuliException ###

@ApiOperation(value = "根据ID修改讲师")
        @RequestMapping("/update/{id}")
        public R updateById(
                @ApiParam(name = "id", value = "讲师ID", required = true)
                @PathVariable String id,
                @ApiParam(name = "teacher", value = "讲师对象", required = true)
                @RequestBody Teacher teacher) {
            //抛出自定义异常
            try {
                int a = 10/0;
            }catch(Exception e) {
                throw new GuliException(20001,"出现自定义异常啦啦啦啦啦啦啦啦");
            }
            //抛出自定义异常
            teacher.setId(id);
            teacherService.updateById(teacher);
            return R.ok();
        }

### 第三步：在GlobalExceptionHandler添加异常处理方法 ###

package com.zibo.servicebase.handler;
    
    import com.zibo.commonutils.R;
    import com.zibo.servicebase.exception.GuliException;
    import org.springframework.web.bind.annotation.ControllerAdvice;
    import org.springframework.web.bind.annotation.ExceptionHandler;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    /**
     * 统一异常处理类
     */
    @ControllerAdvice
    public class GlobalExceptionHandler {
        @ExceptionHandler(Exception.class)//指定出现什么异常执行这个方法
        @ResponseBody//为了返回数据
        public R error(Exception e){
            e.printStackTrace();
            return R.error();
        }
    
        @ExceptionHandler(ArithmeticException.class)
        @ResponseBody
        public R error(ArithmeticException e){
            e.printStackTrace();
            return R.error().message("执行了自定义异常");
        }
    
        @ExceptionHandler(GuliException.class)
        @ResponseBody
        public R error(GuliException e){
            e.printStackTrace();
            return R.error().message(e.getMsg()).code(e.getCode());
        }
    }

### 第四步：测试 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 10][]

# 四、当前项目源码 #

链接：https://pan.baidu.com/s/1k4gwu7ZM5xZjkRM4CF3tuA  
提取码：zibo

# 五、统一日志处理（补） #

## 1、日志 ##

### 配置日志级别： ###

日志记录器（Logger）的行为是分等级的，分为：OFF、FATAL、ERROR、WARN、INFO、DEBUG、ALL；

默认情况下，spring boot从控制台打印出来的日志级别只有INFO及以上级别，可以配置日志级别：

# 设置日志级别
    logging.level.root=WARN

这种方式只能将日志打印在控制台上；

## 2、Logback日志 ##

spring boot内部使用Logback作为日志实现的框架；

参考文章：[https://blog.csdn.net/caisini\_vc/article/details/48551287][https_blog.csdn.net_caisini_vc_article_details_48551287]

### 配置logback日志： ###

①删除application.properties中的日志配置；

②安装idea彩色日志插件：grep-console；

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 11][]

③resources 中创建 logback-spring.xml：

<?xml version="1.0" encoding="UTF-8"?>
 <configuration scan="true" scanPeriod="10 seconds">
 
 
 
 
 <contextName>logback</contextName>
 
 <property name="log.path" value="D:/guli_log/edu"/>
 
 
 
 
 
 
 
 <property name="CONSOLE_LOG_PATTERN"
 value="%yellow(%date{yyyy-MM-dd HH:mm:ss}) |%highlight(%-5level)
 |%blue(%thread) |%blue(%file:%line) |%green(%logger) |%cyan(%msg%n)"/>
 
 <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
 
 
 <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
 <level>INFO</level>
 </filter>
 <encoder>
 <Pattern>${CONSOLE_LOG_PATTERN}</Pattern>
 
 <charset>UTF-8</charset>
 </encoder>
 </appender>
 
 
 <appender name="INFO_FILE"
 class="ch.qos.logback.core.rolling.RollingFileAppender">
 
 <file>${log.path}/log_info.log</file>
 
 <encoder>
 <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level
 %logger{50} - %msg%n
 </pattern>
 <charset>UTF-8</charset>
 </encoder>
 
 <rollingPolicy
 class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
 
 <fileNamePattern>${log.path}/info/log-info-%d{yyyy-MMdd}.%i.log</fileNamePattern>
 <timeBasedFileNamingAndTriggeringPolicy
 class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
 <maxFileSize>100MB</maxFileSize>
 </timeBasedFileNamingAndTriggeringPolicy>
 
 <maxHistory>15</maxHistory>
 </rollingPolicy>
 
 <filter class="ch.qos.logback.classic.filter.LevelFilter">
 <level>INFO</level>
 <onMatch>ACCEPT</onMatch>
 <onMismatch>DENY</onMismatch>
 </filter>
 </appender>
 
 <appender name="WARN_FILE"
 class="ch.qos.logback.core.rolling.RollingFileAppender">
 
 <file>${log.path}/log_warn.log</file>
 
 <encoder>
 <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level
 %logger{50} - %msg%n
 </pattern>
 <charset>UTF-8</charset> 
 </encoder>
 
 <rollingPolicy
 class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
 <fileNamePattern>${log.path}/warn/log-warn-%d{yyyy-MMdd}.%i.log</fileNamePattern>
 <timeBasedFileNamingAndTriggeringPolicy
 class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
 <maxFileSize>100MB</maxFileSize>
 </timeBasedFileNamingAndTriggeringPolicy>
 
 <maxHistory>15</maxHistory>
 </rollingPolicy>
 
 <filter class="ch.qos.logback.classic.filter.LevelFilter">
 <level>warn</level>
 <onMatch>ACCEPT</onMatch>
 <onMismatch>DENY</onMismatch>
 </filter>
 </appender>
 
 <appender name="ERROR_FILE"
 class="ch.qos.logback.core.rolling.RollingFileAppender">
 
 <file>${log.path}/log_error.log</file>
 
 <encoder>
 <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level
 %logger{50} - %msg%n
 </pattern>
 <charset>UTF-8</charset> 
 </encoder>
 
 <rollingPolicy
 class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
 <fileNamePattern>${log.path}/error/log-error-%d{yyyy-MMdd}.%i.log</fileNamePattern>
 <timeBasedFileNamingAndTriggeringPolicy
 class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
 <maxFileSize>100MB</maxFileSize>
 </timeBasedFileNamingAndTriggeringPolicy>
 
 <maxHistory>15</maxHistory>
 </rollingPolicy>
 
 <filter class="ch.qos.logback.classic.filter.LevelFilter">
 <level>ERROR</level>
 <onMatch>ACCEPT</onMatch>
 <onMismatch>DENY</onMismatch>
 </filter>
 </appender>
 
 
 
 <springProfile name="dev">
 
 <logger name="com.zibo" level="INFO"/>
 
 <root level="INFO">
 <appender-ref ref="CONSOLE"/>
 <appender-ref ref="INFO_FILE"/>
 <appender-ref ref="WARN_FILE"/>
 <appender-ref ref="ERROR_FILE"/>
 </root>
 </springProfile>
 
 <springProfile name="pro">
 <root level="INFO">
 <appender-ref ref="CONSOLE"/>
 <appender-ref ref="DEBUG_FILE"/>
 <appender-ref ref="INFO_FILE"/>
 <appender-ref ref="ERROR_FILE"/>
 <appender-ref ref="WARN_FILE"/>
 </root>
 </springProfile>
 </configuration>

### 效果： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 12][]

## 3、将错误日志输出到文件 ##

在GlobalExceptionHandler.java 中类上添加注解：@Slf4j，异常输出语句：log.error(e.getMessage());

package com.zibo.servicebase.handler;
    
    import com.zibo.commonutils.R;
    import com.zibo.servicebase.exception.GuliException;
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.web.bind.annotation.ControllerAdvice;
    import org.springframework.web.bind.annotation.ExceptionHandler;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    /**
     * 统一异常处理类
     */
    @ControllerAdvice
    @Slf4j
    public class GlobalExceptionHandler {
        @ExceptionHandler(Exception.class)//指定出现什么异常执行这个方法
        @ResponseBody//为了返回数据
        public R error(Exception e){
            e.printStackTrace();
            return R.error();
        }
    
        @ExceptionHandler(ArithmeticException.class)
        @ResponseBody
        public R error(ArithmeticException e){
            e.printStackTrace();
            return R.error().message("执行了自定义异常");
        }
    
        @ExceptionHandler(GuliException.class)
        @ResponseBody
        public R error(GuliException e){
            //将日志写到日志文件中
            log.error(e.getMessage());
            e.printStackTrace();
            return R.error().message(e.getMsg()).code(e.getCode());
        }
    }

### 制造错误： ###

try {
                int a = 10/0;
            }catch (Exception e){
                throw new GuliException(400,"除数为0错误！");
            }

### Swagger测试： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 13][]

### 日志文件： ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 14][]

## 4、将日志堆栈信息输出到文件 ##

定义工具类：com.zibo.common下创建util包，创建ExceptionUtil.java工具类

package com.zibo.common.utils;
    
    import java.io.IOException;
    import java.io.PrintWriter;
    import java.io.StringWriter;
    
    public class ExceptionUtil {
        public static String getMessage(Exception e) {
            StringWriter sw = null;
            PrintWriter pw = null;
            try {
                sw = new StringWriter();
                pw = new PrintWriter(sw);
                // 将出错的栈信息输出到printWriter中
                e.printStackTrace(pw);
                pw.flush();
                sw.flush();
            } finally {
                if (sw != null) {
                    try {
                        sw.close();
                    } catch (IOException e1) {
                        e1.printStackTrace();
                    }
                }
                if (pw != null) {
                    pw.close();
                }
            }
            return sw.toString();
        }
    }

### 调用： ###

log.error(ExceptionUtil.getMessage(e));

### GuliException中创建toString方法： ###

@Override
             public String toString() {
              return "GuliException{" +
                      "message=" + this.getMessage() +
                      ", code=" + code +
                      '}';
             }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20201207110210868.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20201207115635716.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20201207115716870.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20201207123226567.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20201207123255923.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 5]: https://img-blog.csdnimg.cn/20201207122921789.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 6]: https://img-blog.csdnimg.cn/20201207123446487.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 7]: https://img-blog.csdnimg.cn/20201207123514258.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 8]: https://img-blog.csdnimg.cn/20201207124117643.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 9]: https://img-blog.csdnimg.cn/20201207124737934.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 10]: https://img-blog.csdnimg.cn/20201207151720845.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[https_blog.csdn.net_caisini_vc_article_details_48551287]: https://blog.csdn.net/caisini_vc/article/details/48551287
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 11]: https://img-blog.csdnimg.cn/20201208091115315.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 12]: https://img-blog.csdnimg.cn/20201208092605734.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 13]: https://img-blog.csdnimg.cn/20201208093418729.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz_size_16_color_FFFFFF_t_70 14]: https://img-blog.csdnimg.cn/20201208093511256.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI5Njg5MzQz,size_16,color_FFFFFF,t_70