Spring Boot 整合 JSP-阿里云开发者社区

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <!-- 父级依赖 -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.6</version>
        <relativePath/>
    </parent>
    <!-- 项目包结构 -->
    <groupId>com.liu</groupId>
    <!-- 项目工件名 -->
    <artifactId>springboot_day1</artifactId>
    <!-- 项目版本 -->
    <version>0.0.1-SNAPSHOT</version>
    <!-- 项目名 -->
    <name>springboot_day1</name>
    <!-- 项目描述 -->
    <description>这是我学习springboot和jsp整合的demo</description>
    <!-- 打包方式 -->
    <packaging>war</packaging>
    <!-- JDK1.8 -->
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <!-- 项目依赖 -->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--添加tomcat依赖模块.-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <!-- 添加servlet依赖模块 -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <scope>provided</scope>
        </dependency>
        <!--jsp页面使用jstl标签-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>
        <!-- 使用jsp引擎，springboot内置tomcat没有此依赖 -->
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <resources>
            <resource>
                <directory>src/main/webapp</directory>
                <!--这里必须是META-INF/resources-->
                <targetPath>META-INF/resources</targetPath>
                <includes>
                    <!--以任意开头点任意结尾的文件-->
                    <include>**/**</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

server:
  port: 8181
spring:
  mvc:
    view:
      prefix: /
      suffix: .jsp

@Controller
@RequestMapping("/test")
public class ControllerTest {
    @RequestMapping("/index")
    public String hello() {
        System.out.println("Hello >>>");
        return "index";
    }
}

<html>
<body>
<h1>hello spring boot and jsp</h1>
</body>
</html>

@Data
@AllArgsConstructor
public class User {
    private int id;
    private String name;
    private int age;
}

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <!-- 父级依赖 -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.6</version>
        <relativePath/>
    </parent>
    <!-- 项目包结构 -->
    <groupId>com.liu</groupId>
    <!-- 项目工件名 -->
    <artifactId>springboot_day1</artifactId>
    <!-- 项目版本 -->
    <version>0.0.1-SNAPSHOT</version>
    <!-- 项目名 -->
    <name>springboot_day1</name>
    <!-- 项目描述 -->
    <description>这是我学习springboot和jsp整合的demo</description>
    <!-- 打包方式 -->
    <packaging>war</packaging>
    <!-- JDK1.8 -->
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <!-- 项目依赖 -->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--添加tomcat依赖模块.-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <!-- 添加servlet依赖模块 -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <scope>provided</scope>
        </dependency>
        <!--jsp页面使用jstl标签-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        <dependency>
            <groupId>taglibs</groupId>
            <artifactId>standard</artifactId>
            <version>1.1.2</version>
        </dependency>
        <!-- 使用jsp引擎，springboot内置tomcat没有此依赖 -->
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <resources>
            <resource>
                <directory>src/main/webapp</directory>
                <!--这里必须是META-INF/resources-->
                <targetPath>META-INF/resources</targetPath>
                <includes>
                    <!--以任意开头点任意结尾的文件-->
                    <include>**/**</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

public interface UserService {
    Collection<User> findAll();
    User findById(long id);
    void add(User user);
    void deleteById(long id);
    void update(User user);
}

@Service
public class UserServiceImpl implements UserService {
    private static HashMap<Long, User> users;
    static {
        users = new HashMap<>();
        users.put(1L, new User(1, "小刘", 12));
        users.put(2L, new User(2, "李白", 34));
        users.put(3L, new User(3, "王昭君", 22));
        users.put(4L, new User(4, "貂蝉", 16));
    }
    @Override
    public Collection<User> findAll() {
        return users.values();
    }
    @Override
    public User findById(long id) {
        return users.get(id);
    }
    @Override
    public void add(User user) {
        users.put(user.getId(), user);
    }
    @Override
    public void deleteById(long id) {
        users.remove(id);
    }
    @Override
    public void update(User user) {
        users.put(user.getId(), user);
    }
}

@Controller
@RequestMapping("user")
public class UserController {
    @Autowired
    private UserService userService;
    @GetMapping("/index")
    public ModelAndView index() {
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.setViewName("index");
        modelAndView.addObject("Users", userService.findAll());
        return modelAndView;
    }
    @GetMapping("/findAll")
    @ResponseBody
    public Collection<User> findAll() {
        System.out.println("查询所有的接口");
        return userService.findAll();
    }
    @GetMapping("/findById/{id}")
    public ModelAndView findById(@PathVariable("id") long id) {
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("user", userService.findById(id));
        modelAndView.setViewName("update");
        return modelAndView;
    }
    @PostMapping("/save")
    public String save(User user) {
        System.out.println("保存接口 USer：" + user);
        userService.add(user);
        return "redirect:/user/index";
    }
    @GetMapping("/deleteById/{id}")
    public String delete(@PathVariable("id") long id) {
        System.out.println("删除接口 id" + id);
        userService.deleteById(id);
        return "redirect:/user/index";
    }
    @PostMapping("/update")
    public String update(User user) {
        System.out.println("更新接口 User：" + user);
        userService.update(user);
        return "redirect:/user/index";
    }
}

@SpringBootApplication
public class SpringbootDay1Application {
    public static void main(String[] args) {
        SpringApplication.run(SpringbootDay1Application.class, args);
    }
}

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<table>
    <h1>用户信息</h1>
    <table>
        <tr>
            <th>用户编号</th>
            <th>用户姓名</th>
            <th>用户年龄</th>
            <th>操作</th>
        </tr>
        <c:forEach items="${Users}" var="user">
            <tr>
                <td>${user.id}</td>
                <td>${user.name}</td>
                <td>${user.age}</td>
                <td>
                    <a href="/user/findById/${user.id}">修改</a>
                    <a href="/user/deleteById/${user.id}">删除</a>
                </td>
            </tr>
        </c:forEach>
    </table>
    <a href="/add.jsp">添加用户</a>
</table>
</body>
</html>

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<form action="/user/save" method="post">
    <input type="text" name="id" value="${user.id}">
    <input type="text" name="name" value="${user.name}">
    <input type="text" name="age" value="${user.age}">
    <input type="submit">
</form>
</body>
</html>

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<form action="/user/update" method="post">
    <input type="text" name="id" value="${user.id}" readonly>
    <input type="text" name="name" value="${user.name}">
    <input type="text" name="age" value="${user.age}">
    <input type="submit">
</form>
</body>
</html>

Spring Boot 整合 JSP

新建工程

pom.xml

application.yml

ControllerTest

index.jsp

启动，测试

User实体类

pom.xml

UserService接口

UserServiceImpl

UserController 控制器

SpringbootDay1Application

index.jsp

add.jsp

update.jsp

启动测试

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