SpringBoot10 整合JSP

1 整合JSP

　　1.1 导入相关依赖

　　　　JSP依赖、JSTL依赖

<?xml version="1.0" encoding="UTF-8"?>

<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>cn.xiangxu</groupId>

    <artifactId>springboottest</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>jar</packaging>

    <name>springboottest</name>

    <description>Demo project for Spring Boot</description>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>1.5.9.RELEASE</version>

        <relativePath/> <!-- lookup parent from repository -->

    </parent>

    <properties>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <java.version>1.8</java.version>

    </properties>

    <dependencies>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-data-jpa</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

        <dependency>

            <groupId>mysql</groupId>

            <artifactId>mysql-connector-java</artifactId>

            <scope>runtime</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

        </dependency>

        <!--JSP相关-->

        <!-- https://mvnrepository.com/artifact/org.apache.tomcat.embed/tomcat-embed-jasper -->

        <dependency>

            <groupId>org.apache.tomcat.embed</groupId>

            <artifactId>tomcat-embed-jasper</artifactId>

        </dependency>

        <!--JSTL相关-->

        <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>javax.servlet-api</artifactId>

        </dependency>

        <!--工具相关-->

        <!--代码生成工具-->

        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->

        <dependency>

            <groupId>org.projectlombok</groupId>

            <artifactId>lombok</artifactId>

        </dependency>

        <!--热部署工具-->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-devtools</artifactId>

            <optional>true</optional>

        </dependency>

        <!--通用工具包-->

        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->

        <dependency>

            <groupId>org.apache.commons</groupId>

            <artifactId>commons-lang3</artifactId>

            <version>3.6</version>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

                <configuration>

                    <fork>true</fork>

                </configuration>

            </plugin>

        </plugins>

    </build>

</project>

　　1.2 在springboot项目的main目录下创建webapp/WEB-INF/jsp的文件夹目录

　　　　技巧01：这里创建的是文件夹而不是包

　　　　技巧02：在jsp文件夹里面创建JSP文件

　　1.3 在配置文件中配置JSP文件的位置

　　　　技巧01：需要从/WEB-INF开始，不要从/webapp开始，否则会提示找不到的(因为WEB项目会从WEB-INF下面寻找JSP文件)，错误信息如下

　　1.4 创建一个jsp文件　　　

<%@page contentType="text/html;charset=utf-8" %>

<html>

<head>

    <title>主页面</title>

</head>

<body>

    <h2>Welcomo to the city of ChongQing.</h2>

</body>

</html>

　　1.5 创建控制层类

package cn.xiangxu.springboottest.controller;

import lombok.extern.slf4j.Slf4j;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

@Controller

@Slf4j

public class JspController {

    @GetMapping(value = "/index")

    public String toIndex() {

        log.info("正在进入登录页面.......");

        return "index";

    }

}

　　技巧01：不能使用@RestController代替@Controller，因为@RestController默认的返回值是json格式，就不会根据字符串去寻找相应的JSP文件了

　　1.5 参考博文

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