• Java --- springMVC实现RESTFul案例

    一、使用springMVC实现RESTFul小案例

    1.1、项目目录图：

     1.2、代码实现：

    pom.xml文件：

    1.     <packaging>warpackaging>
    2.     
    3.     <dependencies>
    4.         
    5.         <dependency>
    6.             <groupId>org.springframeworkgroupId>
    7.             <artifactId>spring-webmvcartifactId>
    8.             <version>5.3.1version>
    9.         dependency>
    10.         
    11.         <dependency>
    12.             <groupId>ch.qos.logbackgroupId>
    13.             <artifactId>logback-classicartifactId>
    14.             <version>1.2.3version>
    15.         dependency>
    16.         
    17.         <dependency>
    18.             <groupId>javax.servletgroupId>
    19.             <artifactId>javax.servlet-apiartifactId>
    20.             <version>3.1.0version>
    21.             <scope>providedscope>
    22.         dependency>
    23.         <dependency>
    24.             <groupId>org.thymeleafgroupId>
    25.             <artifactId>thymeleaf-spring5artifactId>
    26.             <version>3.0.12.RELEASEversion>
    27.         dependency>
    28.         <dependency>
    29.             <groupId>org.projectlombokgroupId>
    30.             <artifactId>lombokartifactId>
    31.             <version>1.18.10version>
    32.         dependency>
    33.     dependencies>

    web.xml文件：

    1. "1.0" encoding="UTF-8"?>
    2. <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
    3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    4.          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
    5.          version="4.0">
    6.     <filter>
    7.         <filter-name>CharacterEncodingFilterfilter-name>
    8.         <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
    9.         <init-param>
    10.             <param-name>encodingparam-name>
    11.             <param-value>UTF-8param-value>
    12.         init-param>
    13.         <init-param>
    14.             <param-name>forceResponseEncodingparam-name>
    15.             <param-value>trueparam-value>
    16.         init-param>
    17.     filter>
    18.     <filter-mapping>
    19.         <filter-name>CharacterEncodingFilterfilter-name>
    20.         <url-pattern>/*url-pattern>
    21.     filter-mapping>
    22.     
    23.     <filter>
    24.         <filter-name>HiddenHttpMethodFilterfilter-name>
    25.         <filter-class>org.springframework.web.filter.HiddenHttpMethodFilterfilter-class>
    26.     filter>
    27.     <filter-mapping>
    28.         <filter-name>HiddenHttpMethodFilterfilter-name>
    29.         <url-pattern>/*url-pattern>
    30.     filter-mapping>
    31.  
    32.     <servlet>
    33.         <servlet-name>DispatcherServletservlet-name>
    34.         <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
    35.         <init-param>
    36.             <param-name>contextConfigLocationparam-name>
    37.             <param-value>classpath:SpringMVC.xmlparam-value>
    38.         init-param>
    39.         <load-on-startup>1load-on-startup>
    40.     servlet>
    41.     <servlet-mapping>
    42.         <servlet-name>DispatcherServletservlet-name>
    43.         <url-pattern>/url-pattern>
    44.     servlet-mapping>
    45. web-app>

    SpringMVC.xml文件：

    1. "1.0" encoding="UTF-8"?>
    2. <beans xmlns="http://www.springframework.org/schema/beans"
    3.        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    4.        xmlns:context="http://www.springframework.org/schema/context"
    5.        xmlns:mvc="http://www.springframework.org/schema/mvc"
    6.        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
    7.     <context:component-scan base-package="com.cjc.mvc">context:component-scan>
    8.     
    9.     <bean id="viewResolver" class="org.thymeleaf.spring5.view.ThymeleafViewResolver">
    10.         <property name="order" value="1"/>
    11.         <property name="characterEncoding" value="UTF-8"/>
    12.         <property name="templateEngine">
    13.             <bean class="org.thymeleaf.spring5.SpringTemplateEngine">
    14.                 <property name="templateResolver">
    15.                     <bean class="org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver">
    16.                         
    17.                         <property name="prefix" value="/WEB-INF/templates/"/>
    18.                         
    19.                         <property name="suffix" value=".html"/>
    20.                         <property name="templateMode" value="HTML5"/>
    21.                         <property name="characterEncoding" value="UTF-8"/>
    22.                     bean>
    23.                 property>
    24.             bean>
    25.         property>
    26.     bean>
    27.     
    28.     <mvc:view-controller path="/" view-name="index">mvc:view-controller>
    29.     <mvc:view-controller path="/toAdd" view-name="employeeAdd">mvc:view-controller>
    30.     
    31.     <mvc:default-servlet-handler/>
    32.     
    33.     <mvc:annotation-driven/>
    34. beans>

    EmployeeController类

    1. @Controller
    2. public class EmployeeController {
    3.      @Autowired
    4.      private EmployeeDao employeeDao;
    5.      @GetMapping("/getAllEmployee")
    6.      public String getAllEmployee(Model model){
    7.           Collection employees = employeeDao.getAll();
    8.           model.addAttribute("employees",employees);
    9.           return "employeeList";
    10.      }
    11.      @DeleteMapping("/deleteEmployee/{id}")
    12.      public String deleteEmployee(@PathVariable("id") Integer id){
    13.           employeeDao.delete(id);
    14.           return "redirect:/getAllEmployee";
    15.      }
    16.      @PostMapping("/addEmployee")
    17.      public String addEmployee(Employee employee){
    18.           employeeDao.save(employee);
    19.           return "redirect:/getAllEmployee";
    20.      }
    21.      @GetMapping("/getEmployeeById/{id}")
    22.      public String getEmployeeById(@PathVariable("id") Integer id,Model model){
    23.           Employee employee = employeeDao.get(id);
    24.           model.addAttribute("employee",employee);
    25.           return "employeeUpdate";
    26.      }
    27.      @PutMapping("/updateEmployee")
    28.      public String updateEmployee(Employee employee){
    29.           employeeDao.save(employee);
    30.           return "redirect:/getAllEmployee";
    31.      }
    32. }

    EmployeeDao类：

    1. @Repository
    2. public class EmployeeDao {
    3.     private static Map employeeMap = null;
    4.     static {
    5.         employeeMap = new HashMap();
    6.         employeeMap.put(1001,new Employee(1001,"老王","123@qq.com",1));
    7.         employeeMap.put(1002,new Employee(1002,"老李","456@qq.com",1));
    8.         employeeMap.put(1003,new Employee(1003,"老赵","789@qq.com",0));
    9.         employeeMap.put(1004,new Employee(1003,"老秦","987@qq.com",0));
    10.         employeeMap.put(1005,new Employee(1003,"老头","654@qq.com",0));
    11.         }
    12.         private static Integer initId = 1006;
    13.     public void save(Employee employee){
    14.         if (employee.getId() == null){
    15.             employee.setId(initId++);
    16.         }
    17.         employeeMap.put(employee.getId(),employee);
    18.     }
    19.     public Collection getAll(){
    20.         return employeeMap.values();
    21.     }
    22.     public Employee get(Integer id){
    23.         return employeeMap.get(id);
    24.     }
    25.     public void delete(Integer id){
    26.         employeeMap.remove(id);
    27.     }
    28. }

    Employee类：

    1. @AllArgsConstructor
    2. @NoArgsConstructor
    3. @Data
    4. public class Employee {
    5.     private Integer id;
    6.     private String name;
    7.     private String email;
    8.     private Integer gender;
    9. }

    employeeAdd.html

    1. html>
    2. <html lang="en" xmlns:th="http://www.thymeleaf.org">
    3. <head>
    4.     <meta charset="UTF-8">
    5.     <title>添加title>
    6. head>
    7. <body>
    8. <form th:action="@{/addEmployee}" method="post">
    9.     name:<input type="text" name="name" ><br>
    10.     email:<input type="text" name="email"><br>
    11.     gender:<input type="radio" name="gender" value="1" >male
    12.     <input type="radio" name="gender" value="2">female<br>
    13.     <input type="submit" value="add">
    14. form>
    15. body>
    16. html>

    employeeList.html:

    1. <table id="dataTable" border="1" cellspacing="0" cellpadding="0" style="text-align: center">
    2.     <tr>
    3.         <th colspan="5">Employee Infoth>
    4.     tr>
    5.     <tr>
    6.         <th>idth>
    7.         <th>nameth>
    8.         <th>emailth>
    9.         <th>genderth>
    10.         <th>options(<a th:href="@{/toAdd}">adda>)th>
    11.     tr>
    12.     <tr th:each="employee : ${employees}">
    13.         <td th:text="${employee.id}">td>
    14.         <td th:text="${employee.name}">td>
    15.         <td th:text="${employee.email}">td>
    16.         <td th:text="${employee.gender}">td>
    17.         <td>
    18.             <a @click="deleteEmployee" th:href="@{'/deleteEmployee/'+${employee.id}}">deletea>
    19.             <a th:href="@{'/getEmployeeById/'+${employee.id}}">updatea>
    20.         td>
    21.     tr>
    22. table>
    23. <form id="deleteForm" method="post">
    24.     <input type="hidden" name="_method" value="delete">
    25. form>
    26. <script type="text/javascript" th:src="@{/static/js/vue.js}">script>
    27. <script type="text/javascript">
    28.     var vue = new Vue({
    29.         el:"#dataTable",
    30.         methods:{
    31.             deleteEmployee:function (event){
    32.                 //根据id获取表单元素
    33.                 var elementById = document.getElementById("deleteForm");
    34.                 //将触发点击事件的超链接的href属性赋值给表单action
    35.                 elementById.action = event.target.href;
    36.                 //提交表单
    37.                 elementById.submit();
    38.                 //取消超链接默认行为
    39.                 event.preventDefault();
    40.            }
    41.         }
    42.     });
    43. script>
    44. body>
    45. html>

    employeeUpdate.html

    1. html>
    2. <html lang="en" xmlns:th="http://www.thymeleaf.org">
    3. <head>
    4.     <meta charset="UTF-8">
    5.     <title>修改title>
    6. head>
    7. <body>
    8. <form th:action="@{/updateEmployee}" method="post">
    9.     <input type="hidden" name="_method" value="put">
    10.     <input type="hidden" name="id" th:value="${employee.id}">
    11.     name:<input type="text" name="name" th:value="${employee.name}"><br>
    12.     email:<input type="text" name="email" th:value="${employee.email}"><br>
    13.     gender:<input type="radio" name="gender" value="1" th:field="${employee.gender}">male
    14.     <input type="radio" name="gender" value="2" th:field="${employee.gender}">female<br>
    15.     <input type="submit" value="update">
    16. form>
    17. body>
    18. html>

     index.html

    1. html>
    2. <html lang="en" xmlns:th="http://www.thymeleaf.org">
    3. <head>
    4.     <meta charset="UTF-8">
    5.     <title>首页title>
    6. head>
    7. <body>
    8. <h1>首页h1>
    9. <a th:href="@{/getAllEmployee}">查看员工信息a>
    10. body>
    11. html>

    vue.js这个文件可以自己下载拷贝过来

    已上传到资源下载中：https://download.csdn.net/download/qq_46093575/86870794

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  • 原文地址：https://blog.csdn.net/qq_46093575/article/details/127631397