spring boot 使用视图modelandview

喜欢ヅ旅行 2021-10-18 07:28 481阅读 0赞

1：springboot使用视图解析器，添加依赖

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-freemarker</artifactId>
            </dependency>
    
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
                <optional>true</optional>
            </dependency>
    
            
            <dependency>
                <groupId>org.apache.tomcat.embed</groupId>
                <artifactId>tomcat-embed-jasper</artifactId>
                <scope>provided</scope>
            </dependency>

2：主函数需要继承SpringBootServletInitializer，并覆盖其方法。

package com.liyafei;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.builder.SpringApplicationBuilder;
    import org.springframework.boot.web.support.SpringBootServletInitializer;
    
    @EnableAutoConfiguration
    @SpringBootApplication
    //返回jsp页面必须继承SpringBootServletInitializer类重写里面的方法
    public class Main extends SpringBootServletInitializer{ 
    
        public static void main(String[] args) { 
            SpringApplication.run(Main.class, args);
            
        }
        
        protected SpringApplicationBuilder config(SpringApplicationBuilder applicationBuilder){ 
            return applicationBuilder.sources(Main.class);
        }
    }

3：配置文件中添加spring.mvc.view配置，配置了视图解析器之后，controlller返回的String，View等就会先找视图解析器

spring:
      datasource:
        driver-class-name: com.mysql.jdbc.Driver
        url: jdbc:mysql://localhost:3306/demo
        username: root
        password: 1367356
      mvc:
        view:
          prefix: /WEB-INF/
          suffix: .jsp
    
    mybatis:
      config-location: classpath:mybatis-config.xml

4：controller映射

package com.liyafei.controller;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    import org.springframework.web.servlet.ModelAndView;
    import org.springframework.web.servlet.view.json.MappingJackson2JsonView;
    
    import com.liyafei.pojo.User;
    
    //这个注解不能使用RestController，不然会返回模板类型的页面
    @Controller
    public class MyController { 
        
        User user=new User();
        @RequestMapping("/my")
        public ModelAndView test(){ 
            ModelAndView mv=new ModelAndView();
            mv.setViewName("modelandview");
            mv.addObject("name", "liyafei");
            user.setAge(20);
            user.setName("wangwu");
            mv.addObject("user", user);
            
            //设置返回的数据为json类型，也可以不设置，返回对象
            //mv.setView(new MappingJackson2JsonView());
            return mv;
        }
        @RequestMapping("index")
        public String index(){ 
            return "index";
        }
    
     
    }

5：测试成功：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpa3VucGVuZzY2NTYyMDE_size_16_color_FFFFFF_t_70]  
6：目录结构  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpa3VucGVuZzY2NTYyMDE_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpa3VucGVuZzY2NTYyMDE_size_16_color_FFFFFF_t_70]: /images/20211018/9c1fce33d1d4451dbd18cbe5c3b2fff9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xpa3VucGVuZzY2NTYyMDE_size_16_color_FFFFFF_t_70 1]: /images/20211018/bd47b45ceec846c89dd4ab70c4504e47.png