解决idea/eclipse下springboot/springcloud无法访问jsp的问题

版权声明：by DongBao https://blog.csdn.net/aaaadong/article/details/80757301

解决方向1:

idea没有添加web的关联属性

解决方向2:

idea pom文件引用缺失(例如常见的三个引用)

        <!-- servlet 依赖包 -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <scope>provided</scope>
        </dependency>
        <!-- servlet 依赖包 -->
        <!-- JSTL (JSP standard Tag Library) JSP 标准标签库 -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        <!-- JSTL (JSP standard Tag Library) JSP 标准标签库 -->
        <!-- Tomcat的支持 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
        </dependency>
        <!-- Tomcat的支持 -->
        <!-- jsp依赖jar包start -->
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>javax.servlet.jsp-api</artifactId>
            <version>2.3.1</version>
        </dependency>
        <!-- jsp依赖jar包end -->

解决方向3:

如果还是404,就应该是编译问题了,强制添加resource,在pom文件中

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
        <!-- jsp 404解决 -->
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.*</include>
                </includes>
            </resource>
            <!-- 打包时将jsp文件拷贝到META-INF目录下 -->
            <resource>
                <!-- 指定resources插件处理哪个目录下的资源文件 -->
                <directory>src/main/webapp</directory>
                <!--注意此次必须要放在此目录下才能被访问到 -->
                <targetPath>META-INF/resources</targetPath>
                <includes>
                    <include>**/*.*</include>
                </includes>
            </resource>
        </resources>
        <!-- jsp 404解决 -->
    </build>

三种都用了如果还没有解决只能重启程序了...

eclipse同理