SpringBoot和JSP页面集成与设置首页-yellowcong

冷不防 2022-05-31 03:11 210阅读 0赞

> springboot开发起来，确实是清爽不收啊，和jsp结合起来，更是如虎添翼啊，碉堡了，有木有，而且这个玩意配置起来还挺清爽的。需要郑重声明一下，这个项目工程是一个java工程，而不是web工程，这点请切记。

## 项目地址 ##

https://gitee.com/yellowcong/springboot-demo/tree/master/springboot-demo8-jsp

## 目录结构 ##

![这里写图片描述][SouthEast]

## 设置首页 ##

/** * @author yellowcong * 创建日期:2018/02/05 * 设定首页 */
    @Configuration
    public class DefaultView extends WebMvcConfigurerAdapter { 
    
        @Override
        public void addViewControllers(ViewControllerRegistry registry) {
            registry.addViewController("/").setViewName("forward:/index");
            registry.setOrder(Ordered.HIGHEST_PRECEDENCE);
            super.addViewControllers(registry);
        }
    }

## 环境搭建 ##

需要添加jsp依赖的包，不然就会报错。

<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">
      <modelVersion>4.0.0</modelVersion>
    
      <groupId>yellowcong.com</groupId>
      <artifactId>cas-client-springboot</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>jar</packaging>
    
      <name>cas-client-springboot</name>
      <url>http://maven.apache.org</url>
    
       
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.10.RELEASE</version>
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <java.cas.client.version>3.5.0</java.cas.client.version>
        </properties>
    
        <dependencies>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
                <scope>provided</scope>
            </dependency>
            <dependency>
                <groupId>org.apache.tomcat.embed</groupId>
                <artifactId>tomcat-embed-jasper</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
    
        </dependencies>
    
        <build>
            <plugins>
                
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    </project>

### 配置application.yml ###

设置项目的名称，端口号，以及jsp文件存放地址，jsp文件需要存放到src/main/WEB-INF/jsp目录下面。

logging:
      #日志存储地址
      file: "logs/config/demo-xx.log"
    info:
      name : "入门案例"
    
    server:
      #端口号
      #http://yellowcong.com:8888/
      port: 8888
      #项目名，如果不设定，默认是 /
      context-path: /
    
    spring:
      mvc:
        view:
          # 页面默认前缀目录
          prefix: /WEB-INF/jsp/
          # 响应页面默认后缀
          suffix: .jsp

## 配置视图和控制器 ##

### 首页视图 ###

package com.yellowcong.cas.controller;
    
    import javax.servlet.http.HttpServletRequest;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    @Controller
    public class IndexController {
    
        @RequestMapping("/index")
        public String index(HttpServletRequest request) {
            return "index";
        }
    }

### 首页的jsp文件 ###

<%@ page import="java.util.Map" %>
    <%@ page import="java.util.Iterator" %>
    <%@ page import="java.util.List" %>
    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>index</title>
    </head>
    <body>
    <h1>首页</h1>
    <a href="<%=request.getContextPath()%>/user/info">用户信息</a>
    </body>
    </html>

## 注册服务并设定首页 ##

package com.yellowcong;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.core.Ordered;
    import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
    
    @SpringBootApplication
    public class ConfigMain { 
    
        /** * @author yellowcong * 创建日期:2018/02/05 * 设定首页 */
        @Configuration
        public class DefaultView extends WebMvcConfigurerAdapter { 
    
            @Override
            public void addViewControllers(ViewControllerRegistry registry) {
                //设定首页为index
                registry.addViewController("/").setViewName("forward:/index");
    
                //设定匹配的优先级
                registry.setOrder(Ordered.HIGHEST_PRECEDENCE);
    
                //添加视图控制类
                super.addViewControllers(registry);
            }
        }
    
        public static void main(String[] args) {
            SpringApplication.run(ConfigMain.class, args);
        }
    }

## 运行测试 ##

登录到首页，然后查看用户信息。  
![这里写图片描述][SouthEast 1]

## 参考文章 ##

[http://blog.csdn.net/u012100371/article/details/76864747][http_blog.csdn.net_u012100371_article_details_76864747]

[SouthEast]: /images/20220531/35e1bf06555c4d22be63990aa8995725.png
[SouthEast 1]: /images/20220531/52f6f62754604df2993690a876c47b5f.png
[http_blog.csdn.net_u012100371_article_details_76864747]: http://blog.csdn.net/u012100371/article/details/76864747