SpingMVC_註解式開發_接收請求參數
阿新 • • 發佈：2018-03-18
style ng- rtu spl char enc b16 oid b- 
一、逐個接收
1 import org.springframework.stereotype.Controller; 2 import org.springframework.web.bind.annotation.RequestMapping; 3 import org.springframework.web.servlet.ModelAndView; 4 5 @Controller // 表示當前類是一個處理器 6 @RequestMapping("/test") 7 public class MyController { 8 9 @RequestMapping("/register.do")MyController10 public ModelAndView doRegister(String name, int age) { 11 // TODO Auto-generated method stub 12 13 System.out.println("name=" + name); 14 System.out.println("age=" + age); 15 16 ModelAndView mv = new ModelAndView(); 17 mv.addObject("name", name);18 mv.addObject("age", age); 19 mv.setViewName("/WEB-INF/jsp/welcome.jsp"); 20 return mv; 21 } 22 23 }
1 <!-- 註冊組件掃描器 --> 2 <context:component-scan base-package="com.jmu.handlers"></context:component-scan>springmvc.xml
1 <%@ page language="java" importindex.jsp="java.util.*" pageEncoding="UTF-8"%> 2 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 3 <%@page isELIgnored="false" %> 4 <html> 5 <head> 6 <title>My JSP ‘index.jsp‘ starting page</title> 7 </head> 8 9 <body> 10 <form action="${pageContext.request.contextPath}/test/register.do" 11 method="post"> 12 姓名：<input type="text" name="name"> <br> 13 年齡：<input type="text" name="age"> <br> 14 <input type="submit" value="註冊"> 15 </form> 16 </body> 17 </html>
1 <body> 2 name=${name}<br> 3 age=${age}<br> 4 </body>welcome.jsp
二、解決中文亂碼問題
在CharacterEncodingFilter中
在web.xml中添加
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
三、校正請求參數名
四、以對象形式整體接收
1 public class Student { 2 private String name; 3 private int age; 4 5 public String getName() { 6 return name; 7 } 8 9 public void setName(String name) { 10 this.name = name; 11 } 12 13 public int getAge() { 14 return age; 15 } 16 17 public void setAge(int age) { 18 this.age = age; 19 } 20 21 @Override 22 public String toString() { 23 return "Student [name=" + name + ", age=" + age + "]"; 24 } 25 26 }Student
1 import org.springframework.stereotype.Controller; 2 import org.springframework.web.bind.annotation.RequestMapping; 3 import org.springframework.web.servlet.ModelAndView; 4 5 import com.jmu.beans.Student; 6 7 @Controller 8 @RequestMapping("/test") 9 public class MyController { 10 11 @RequestMapping("/register.do") 12 public ModelAndView doRegister(Student student) { 13 System.out.println("name=" + student.getName()); 14 System.out.println("age=" + student.getAge()); 15 16 ModelAndView mv = new ModelAndView(); 17 mv.addObject("student", student); 18 mv.setViewName("/WEB-INF/jsp/welcome.jsp"); 19 return mv; 20 21 } 22 }MyController
1 <beans xmlns="http://www.springframework.org/schema/beans" 2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xmlns:context="http://www.springframework.org/schema/context" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xmlns:mvc="http://www.springframework.org/schema/mvc" 7 xsi:schemaLocation="http://www.springframework.org/schema/beans 8 http://www.springframework.org/schema/beans/spring-beans.xsd 9 http://www.springframework.org/schema/context 10 http://www.springframework.org/schema/context/spring-context.xsd 11 http://www.springframework.org/schema/aop 12 http://www.springframework.org/schema/aop/spring-aop.xsd 13 http://www.springframework.org/schema/tx 14 http://www.springframework.org/schema/tx/spring-tx.xsd 15 http://www.springframework.org/schema/mvc 16 http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 17 <!-- 註冊組件掃描器 --> 18 <context:component-scan base-package="com.jmu.handlers"></context:component-scan> 19 </beans>springmvc.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> 3 <display-name>02-springmvc-Object</display-name> 4 <filter> 5 <filter-name>CharacterEncodingFilter</filter-name> 6 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 7 <init-param> 8 <param-name>encoding</param-name> 9 <param-value>UTF-8</param-value> 10 </init-param> 11 <init-param> 12 <param-name>forceEncoding</param-name> 13 <param-value>true</param-value> 14 </init-param> 15 </filter> 16 <filter-mapping> 17 <filter-name>CharacterEncodingFilter</filter-name> 18 <url-pattern>/*</url-pattern> 19 </filter-mapping> 20 <servlet> 21 <servlet-name>springMVC</servlet-name> 22 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 23 <init-param> 24 <param-name>contextConfigLocation</param-name> 25 <param-value>classpath:springmvc.xml</param-value> 26 </init-param> 27 <load-on-startup>1</load-on-startup> 28 </servlet> 29 <servlet-mapping> 30 <servlet-name>springMVC</servlet-name> 31 <url-pattern>*.do</url-pattern> 32 </servlet-mapping> 33 <welcome-file-list> 34 <welcome-file>index.jsp</welcome-file> 35 </welcome-file-list> 36 </web-app>web.xml
1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() 5 + path + "/"; 6 %> 7 <%@page isELIgnored="false"%> 8 9 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 10 <html> 11 <head> 12 <base href="<%=basePath%>"> 13 14 <title>My JSP ‘index.jsp‘ starting page</title> 15 </head> 16 17 <body> 18 <form action="${pageContext.request.contextPath }/test/register.do" 19 method="post"> 20 姓名:<input type="text" name="name" /><br> 年 齡：<input type="text" 21 name="age" /><br> <input type="submit" value="註冊" /> 22 </form> 23 </body> 24 </html>index.jsp
1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> 2 <% 3 String path = request.getContextPath(); 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 5 %> 6 <%@page isELIgnored="false" %> 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 8 <html> 9 <head> 10 <base href="<%=basePath%>"> 11 12 <title>welcome page</title> 13 14 </head> 15 16 <body> 17 student=${student} <br> 18 </body> 19 </html>welcome
五、域屬性參數的接收
域屬性參數，即對象屬性，當請求參數中的數據為某類對象域屬性的屬性值時，要求請求參數名為“域屬性名.屬性”。
1 public class School { 2 private String sname; 3 private String address; 4 5 public String getSname() { 6 return sname; 7 } 8 9 public void setSname(String sname) { 10 this.sname = sname; 11 } 12 13 public String getAddress() { 14 return address; 15 } 16 17 public void setAddress(String address) { 18 this.address = address; 19 } 20 21 @Override 22 public String toString() { 23 return "School [sname=" + sname + ", address=" + address + "]"; 24 } 25 26 27 28 }School
六、路徑變量
SpingMVC_註解式開發_接收請求參數