SpringBoot整合jsp （增加启动报错，子模块集成无法跳转问题解决方案）

迈不过友情╰ 2022-04-16 03:22 304阅读 0赞

SpringBoot整合jsp具体步骤：

具体方法可参见官方示例：[https://github.com/spring-projects/spring-boot/tree/v2.1.3.RELEASE/spring-boot-samples/spring-boot-sample-web-jsp][https_github.com_spring-projects_spring-boot_tree_v2.1.3.RELEASE_spring-boot-samples_spring-boot-sample-web-jsp]

1、SpringBoot整合jsp时，项目一定要改为war类型，否则会找不到页面。可在创建项目时选择war或者在pom.xml文件内修改。  
2、引入tomcat外部依赖，因为SpringBoot对jsp没有很好的支持，在pom.xml文件中引入以下mavne依赖。

<dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</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>
          <scope>provided</scope>
    </dependency>

3、在src/main/resouce/application.prooerties中配置view视图路径前缀和后缀

#整合jsp
    spring.mvc.view.prefix:/WEB-INF/jsp/
    spring.mvc.view.suffix:.jsp

4、创建文件jsp文件，src/main/webapp/WEB-INF/jsp/idnex.jsp，没有的文件夹自己进行创建。注意：不要把jsp页面存放在resouces文件，否则不会被访问到。目录结构如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjMxNTYwMA_size_16_color_FFFFFF_t_70][]

5、sprongboot启动引导类继承SpringBootServletInitializer

package com.example.demo;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.web.support.SpringBootServletInitializer;
    
    @SpringBootApplication
    public class DemoApplication extends SpringBootServletInitializer {
        public static void main(String[] args) {
            SpringApplication.run(DemoApplication.class, args);
        }
    }

6、Controller类注解要使用@Controller，不能使用@RestController，否则无法加载页面。@RestController是返回一个Json串。

package com.example.demo;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    import java.util.Map;
    
    @Controller
    public class testController {
    
        //跳转index页面
        @GetMapping("/test1")
        public String test1(Map<String,String > model){
            System.out.println("test1");
            model.put("name","xiaoming");
            model.put("gender","nan");
            return "index";
        }
    
        //返回json字符串
        @ResponseBody
        @GetMapping("/test2")
        public String test2(){
            System.out.println("test2");
            return "index";
        }
    }

7、根据Controller类的路径访问，即可跳转到指定jsp页面。

项目启动，访问localhost：8080/test1和localhost：8080/test2，看页面显示情况

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjMxNTYwMA_size_16_color_FFFFFF_t_70 1][]

![20190317000430597.png][]

8、如果单模块情况下启动报错，或者无法跳转jsp页面，注掉tomcat-embed-jasper依赖的<scope>标签

9、如果多模块情况下，子模块项目无法跳转jsp页面，则在标题8操作的基础上，设置Working directory路径

菜单栏选择Run-->>Edit Configurations，把Working directory修改为Module Dir

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjMxNTYwMA_size_16_color_FFFFFF_t_70 2][]

[https_github.com_spring-projects_spring-boot_tree_v2.1.3.RELEASE_spring-boot-samples_spring-boot-sample-web-jsp]: https://github.com/spring-projects/spring-boot/tree/v2.1.3.RELEASE/spring-boot-samples/spring-boot-sample-web-jsp
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[20190317000430597.png]: /images/20220416/b60b7d73d11e45f78f62e14c9f5a7932.png
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