在springboot中整合jsp做视图层，一直404解决方法

短命女 2022-03-16 10:48 268阅读 0赞

总结Springboot加载jsp页面的几种错误。

**启动方式不对（网上说法）**

![20190227163536301.png][]

![20190227163536285.png][]

不能直接从aplication启动。需要从maven中启动。这种说法我404时试了，对我的没用。

**依赖包未引入**

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <scope>provided</scope>
        </dependency>
        
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
    
        
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            
        </dependency>
    </dependencies>

以上是我已跑成功的依赖。可以参考

**关于idea中打包jar还是war的问题**。我的就是这个问题。我打成jar的时候是访问不了的。打成war就可以访问了。在创建的时候指定war就行

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc0MDU0MA_size_16_color_FFFFFF_t_70][]

**web目录路径的问题。**

操作如下，点击Project Structure

![20190227163658332.png][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjc0MDU0MA_size_16_color_FFFFFF_t_70 1][]

访问的时候，目录结构，user.jsp在webapp\\WEB-INF\\user\\下面,我的web模块已经配置了跟路径为webapp。上图的配置。所以只要指定下具体目录即可。

![20190227163658194.png][]

![20190227163658274.png][]

**配置文件配置视图前缀。如果不配，就要从java代码中设置。**

![20190227163658221.png][]

控制器访问

![20190227163658291.png][]

![20190227163709623.png][]

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[20190227163536285.png]: /images/20220316/dad42dc16a6949a6956791692c394f66.png
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[20190227163658332.png]: /images/20220316/95812eed7f934677b520513f82edbf66.png
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[20190227163658194.png]: /images/20220316/27f1b5e207584a5f8faf4cf9858a8056.png
[20190227163658274.png]: /images/20220316/2a24151976f0408a9948ce6b9ec32e12.png
[20190227163658221.png]: /images/20220316/c1949fa32efd4b12b0d491adee5c77bc.png
[20190227163658291.png]: /images/20220316/72909162c6a14163835d70cc9422f6cc.png
[20190227163709623.png]: /images/20220316/a678635dbde1442aae36e48b5722a227.png