SpringMVC入门

心已赠人 2021-09-19 05:30 549阅读 0赞

目录

示例1 ：

示例2：

示例3：

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新建dynamic web project

导入包：

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示例1 ：

web.xml配置：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  3.   <display-name>ssm_spring_mvc</display-name>
  6.   <servlet>
  7.       <servlet-name>springmvc</servlet-name>
  8.       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  10.       <init-param>
  11. <!--       读取springmvc配置文件 -->
  12.           <param-name>contextConfigLocation</param-name>
  13.           <param-value>classpath:springmvc.xml</param-value>
  14.       </init-param>
  15.       <load-on-startup>1</load-on-startup>
  16.   </servlet>
  18.   <servlet-mapping>
  19.       <servlet-name>springmvc</servlet-name>
  20. <!--       拦截规则 -->
  21. <!--         1.*.htm,*.do,*.action以扩展名方式拦截，什么情况下都可以使用。但是不拦截静态资源如:.jpg,.css,.js,.png    。 -->
  22. <!--         2./ 不拦截静态资源如:.jpg,.css,.js,.png -->
  23. <!--           /*全部拦截 包括jsp和所有静态资源。不推荐使用 -->
  24. <!--       <url-pattern>*.sikiedu</url-pattern> -->
  25.        <url-pattern>/</url-pattern>
  26.   </servlet-mapping>
  29.   <welcome-file-list>
  30.     <welcome-file>index.html</welcome-file>
  31.     <welcome-file>index.htm</welcome-file>
  32.     <welcome-file>index.jsp</welcome-file>
  33.     <welcome-file>default.html</welcome-file>
  34.     <welcome-file>default.htm</welcome-file>
  35.     <welcome-file>default.jsp</welcome-file>
  36.   </welcome-file-list>
  37. </web-app>

servlet-class标签的内容是DispatcherServlet的全包名 ，如下：

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新建“springmvc.xml”,并导入约束：

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springmvc.xml:

  1. <?xml version="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:aop="http://www.springframework.org/schema/aop"
  5.     xmlns:context="http://www.springframework.org/schema/context"
  6.     xmlns:mvc="http://www.springframework.org/schema/mvc"
  7.     xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
  8.         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
  9.         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
  10.         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
  12. <!--         开启注解扫描 -->
  13.         <context:component-scan base-package="com.sikiedu.controller"></context:component-scan>
  15.         <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  16.             <property name="prefix" value="/Views/"></property>
  17.             <property name="suffix" value=".jsp"></property>
  18.         </bean>
  19. </beans>

ItemController.java:

  1. /**
  2.  * 
  3.  */
  4. package com.sikiedu.controller;
  6. import org.springframework.stereotype.Controller;
  7. import org.springframework.web.bind.annotation.RequestMapping;
  8. import org.springframework.web.servlet.ModelAndView;
  10. /**
  11.  *
  12.  *
  13.  * @author Lijiang
  14.  *2019年5月3日
  15.  */
  17. @Controller
  18. public class ItemController {
  21.     @RequestMapping(value="welcome")
  22.     public String Test(){
  24.         return "helloworld";
  25.     }
  27. }

helloworld.jsp:

  1. <%@ page language="java" contentType="text/html; charset=UTF-8"
  2.     pageEncoding="UTF-8"%>
  3. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  4. <html>
  5. <head>
  6. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  7. <title>Insert title here</title>
  8. </head>
  9. <body>
  10. helloWorld
  11. </body>
  12. </html>

index.jsp:（注意：index.jsp放在webcontent目录下，不要放在web-inf文件夹下面！！！）

  1. <%@ page language="java" contentType="text/html; charset=UTF-8"
  2.     pageEncoding="UTF-8"%>
  3. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  4. <html>
  5. <head>
  6. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  7. <title>Insert title here</title>
  8. </head>
  9. <body>
  10.     <a href="welcome">welcome to springmvc</a>
  11. </body>
  12. </html>

运行结果：

2019050313265769.gif

示例2：

web.xml:

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  3.   <display-name>ssm_spring_mvc</display-name>
  6.   <servlet>
  7.       <servlet-name>springmvc</servlet-name>
  8.       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  10.       <init-param>
  11. <!--       读取springmvc配置文件 -->
  12.           <param-name>contextConfigLocation</param-name>
  13.           <param-value>classpath:springmvc.xml</param-value>
  14.       </init-param>
  15.       <load-on-startup>1</load-on-startup>
  16.   </servlet>
  18.   <servlet-mapping>
  19.       <servlet-name>springmvc</servlet-name>
  20. <!--       拦截规则 -->
  21. <!--         1.*.htm,*.do,*.action以扩展名方式拦截，什么情况下都可以使用。但是不拦截静态资源如:.jpg,.css,.js,.png    。 -->
  22. <!--         2./ 不拦截静态资源如:.jpg,.css,.js,.png -->
  23. <!--           /*全部拦截 包括jsp和所有静态资源。不推荐使用 -->
  24. <!--       <url-pattern>*.sikiedu</url-pattern> -->
  25.        <url-pattern>*.do</url-pattern>
  26.   </servlet-mapping>
  29.   <welcome-file-list>
  30.     <welcome-file>index.html</welcome-file>
  31.     <welcome-file>index.htm</welcome-file>
  32.     <welcome-file>index.jsp</welcome-file>
  33.     <welcome-file>default.html</welcome-file>
  34.     <welcome-file>default.htm</welcome-file>
  35.     <welcome-file>default.jsp</welcome-file>
  36.   </welcome-file-list>
  37. </web-app>

springmvc.xml:

  1. <?xml version="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:aop="http://www.springframework.org/schema/aop"
  5.     xmlns:context="http://www.springframework.org/schema/context"
  6.     xmlns:mvc="http://www.springframework.org/schema/mvc"
  7.     xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
  8.         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
  9.         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
  10.         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
  12. <!--         开启注解扫描 -->
  13.         <context:component-scan base-package="com.sikiedu.controller"></context:component-scan>
  15.         <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  16.             <property name="prefix" value="/WEB-INF/jsp/"></property>
  17.             <property name="suffix" value=".jsp"></property>
  18.         </bean>
  19. </beans>

ItemController.java：

  1. /**
  2.  * 
  3.  */
  4. package com.sikiedu.controller;
  6. import org.springframework.stereotype.Controller;
  7. import org.springframework.web.bind.annotation.RequestMapping;
  8. import org.springframework.web.servlet.ModelAndView;
  10. /**
  11.  *
  12.  *
  13.  * @author Lijiang
  14.  *2019年5月3日
  15.  */
  17. @Controller
  18. public class ItemController {
  21.     @RequestMapping(value="list.do")
  22.     public ModelAndView Test(){
  23.         ModelAndView mav=new ModelAndView();
  24.         mav.setViewName("item_list");
  25.         return mav;
  26.     }
  28. }

index.jsp:

  1. <%@ page language="java" contentType="text/html; charset=UTF-8"
  2.     pageEncoding="UTF-8"%>
  3. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  4. <html>
  5. <head>
  6. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  7. <title>Insert title here</title>
  8. </head>
  9. <body>
  10.     <a href="list.do">welcome to springmvc</a>
  11. </body>
  12. </html>

运行结果：

20190503135735704.gif

示例3：

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web.xml:

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  3.   <display-name>ssm_spring_mvc</display-name>
  6.   <servlet>
  7.       <servlet-name>springmvc</servlet-name>
  8.       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  10.       <init-param>
  11. <!--       读取springmvc配置文件 -->
  12.           <param-name>contextConfigLocation</param-name>
  13.           <param-value>classpath:springmvc.xml</param-value>
  14.       </init-param>
  15.       <load-on-startup>1</load-on-startup>
  16.   </servlet>
  18.   <servlet-mapping>
  19.       <servlet-name>springmvc</servlet-name>
  20. <!--       拦截规则 -->
  21. <!--         1.*.htm,*.do,*.action以扩展名方式拦截，什么情况下都可以使用。但是不拦截静态资源如:.jpg,.css,.js,.png    。 -->
  22. <!--         2./ 不拦截静态资源如:.jpg,.css,.js,.png -->
  23. <!--           /*全部拦截 包括jsp和所有静态资源。不推荐使用 -->
  24. <!--       <url-pattern>*.sikiedu</url-pattern> -->
  25.        <url-pattern>*.do</url-pattern>
  26.   </servlet-mapping>
  29.   <welcome-file-list>
  30.     <welcome-file>index.html</welcome-file>
  31.     <welcome-file>index.htm</welcome-file>
  32.     <welcome-file>index.jsp</welcome-file>
  33.     <welcome-file>default.html</welcome-file>
  34.     <welcome-file>default.htm</welcome-file>
  35.     <welcome-file>default.jsp</welcome-file>
  36.   </welcome-file-list>
  37. </web-app>

springmvc.xml:

  1. <?xml version="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:aop="http://www.springframework.org/schema/aop"
  5.     xmlns:context="http://www.springframework.org/schema/context"
  6.     xmlns:mvc="http://www.springframework.org/schema/mvc"
  7.     xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
  8.         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
  9.         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
  10.         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
  12. <!--         开启注解扫描 -->
  13.         <context:component-scan base-package="com.sikiedu.controller"></context:component-scan>
  15.         <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  16.             <property name="prefix" value="/WEB-INF/jsp/"></property>
  17.             <property name="suffix" value=".jsp"></property>
  18.         </bean>
  19. </beans>

ItemController.java:

  1. /**
  2.  * 
  3.  */
  4. package com.sikiedu.controller;
  6. import java.util.ArrayList;
  7. import java.util.List;
  9. import org.springframework.stereotype.Controller;
  10. import org.springframework.ui.Model;
  11. import org.springframework.web.bind.annotation.RequestMapping;
  12. import org.springframework.web.bind.annotation.RequestMethod;
  13. import org.springframework.web.servlet.ModelAndView;
  15. import com.sikiedu.bean.ItemInfo;
  17. import jdk.nashorn.internal.ir.RuntimeNode.Request;
  19. /**
  20.  *
  21.  *
  22.  * @author Lijiang
  23.  *2019年5月3日
  24.  */
  26. @Controller
  27. public class ItemController {
  30.     @RequestMapping(value={"list.do","mylist.do"},method={RequestMethod.GET,RequestMethod.POST })
  31.     public ModelAndView Test(){
  32.         ModelAndView mav=new ModelAndView();
  34.         ItemInfo info1=new ItemInfo("1", "王者荣耀", "moba", "0");
  35.         ItemInfo info2=new ItemInfo("2", "王者荣耀", "moba", "0");
  36.         ItemInfo info3=new ItemInfo("3", "王者荣耀", "moba", "0");
  37.         ItemInfo info4=new ItemInfo("4", "王者荣耀", "moba", "0");
  39.         List<ItemInfo> itemList=new ArrayList<ItemInfo>();
  40.         itemList.add(info1);
  41.         itemList.add(info2);
  42.         itemList.add(info3);
  43.         itemList.add(info4);
  45.         mav.addObject("itemList", itemList);
  47.         mav.setViewName("item_list");
  48.         return mav;
  49.     }
  51. //    转发
  52.     @RequestMapping("forwardString.do")
  53.     public String forwardString(){
  54.         return "forward:list.do";
  55.     }
  57. //    重定向
  58.     @RequestMapping("redirectString.do")
  59.     public String redirectString(){
  60.         return "redirect:/index.jsp";
  61.     }
  63.     @RequestMapping(value="testList.do")
  64.     public String Test1(Model model){
  66.         ItemInfo info1=new ItemInfo("1", "王者荣耀", "moba", "0");
  67.         ItemInfo info2=new ItemInfo("2", "王者荣耀", "moba", "0");
  68.         ItemInfo info3=new ItemInfo("3", "王者荣耀", "moba", "0");
  69.         ItemInfo info4=new ItemInfo("4", "王者荣耀", "moba", "0");
  71.         List<ItemInfo> itemList=new ArrayList<ItemInfo>();
  72.         itemList.add(info1);
  73.         itemList.add(info2);
  74.         itemList.add(info3);
  75.         itemList.add(info4);
  77.         model.addAttribute("itemList", itemList);
  79.         return "item_list";
  81.     }
  82. }

ItemInfo.java：

  1. /**
  2.  * 
  3.  */
  4. package com.sikiedu.bean;
  6. /**
  7.  *
  8.  *
  9.  * @author Lijiang
  10.  *2019年5月3日
  11.  */
  13. public class ItemInfo {
  15.     private String item_id;
  16.     private String item_name;
  17.     private String item_type;
  18.     private String item_price;
  21.     public ItemInfo(String item_id, String item_name, String item_type, String item_price) {
  22.         super();
  23.         this.item_id = item_id;
  24.         this.item_name = item_name;
  25.         this.item_type = item_type;
  26.         this.item_price = item_price;
  27.     }
  28.     public String getItem_id() {
  29.         return item_id;
  30.     }
  31.     public void setItem_id(String item_id) {
  32.         this.item_id = item_id;
  33.     }
  34.     public String getItem_name() {
  35.         return item_name;
  36.     }
  37.     public void setItem_name(String item_name) {
  38.         this.item_name = item_name;
  39.     }
  40.     public String getItem_type() {
  41.         return item_type;
  42.     }
  43.     public void setItem_type(String item_type) {
  44.         this.item_type = item_type;
  45.     }
  46.     public String getItem_price() {
  47.         return item_price;
  48.     }
  49.     public void setItem_price(String item_price) {
  50.         this.item_price = item_price;
  51.     }
  52.     @Override
  53.     public String toString() {
  54.         return "ItemInfo [item_id=" + item_id + ", item_name=" + item_name + ", item_type=" + item_type
  55.                 + ", item_price=" + item_price + "]";
  56.     }
  59. }

index.jsp:

  1. <%@ page language="java" contentType="text/html; charset=UTF-8"
  2.     pageEncoding="UTF-8"%>
  3. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  4. <html>
  5. <head>
  6. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  7. <title>Insert title here</title>
  8. </head>
  9. <body>
  10.     <a href="list.do">welcome to springmvc</a>
  11.     <form action="${pageContext.request.contextPath}/list.do" method="get">
  12.         <input type="submit" value="提交:list.do">
  13.     </form><br>
  14.     <form action="${pageContext.request.contextPath}/mylist.do" method="post">
  15.         <input type="submit" value="提交:mylist.do">
  16.     </form><br>
  17.     <form action="${pageContext.request.contextPath}/forwardString.do">
  18.         <input type="submit" value="提交:forwardString.do">
  19.     </form><br>
  21.     <form>
  22.         <input type="text" value="url末尾输入:redirectString.do">
  23.     </form><br>
  25.     <form action="${pageContext.request.contextPath}/testList.do">
  26.         <input type="submit" value="提交:testList.do">
  27.     </form><br>
  28. </body>
  29. </html>

item_list.jsp:

watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwMzIzMjU2_size_16_color_FFFFFF_t_70 6

运行结果：

20190503153613649.gif

进阶篇：*ssm三大框架整合*

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