1 所需jar包
项目结构如下：
2 web.xml配置文件的内容如下：
| <?xmlversion="1.0"encoding="UTF-8"?> <web-appversion="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <!-- struts用/*,springmvc不能用/*方式，配置的url-pattern如：*.xxx --> <url-pattern>*.do</url-pattern> </servlet-mapping> </web-app> |
3 springmvc-servlet.xml的内容如下：
| <?xmlversion="1.0"encoding="UTF-8"?> <beansxmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd "> <context:component-scanbase-package="com.rl.controller"/> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <propertyname="prefix"value="/WEB-INF/jsp/"/> <propertyname="suffix"value=".jsp"/> </bean>
<!--文件上传的视图解析器 id一定是multipartResolver,不能随便定义 --> <beanid="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!--文件上传的最大值，以字节为单位 --> <propertyname="maxUploadSize"value="1024000"></property> </bean>
<mvc:interceptors> <mvc:interceptor> <!-- path:指定要拦截的范围。语法：/（根目录）test/**,所有拦截/** --> <mvc:mappingpath="/**"/> <beanclass="com.rl.interceptor.MyInterceptor"/> </mvc:interceptor> </mvc:interceptors> </beans> |
4 Test1Controller.java的内容如下：
| package com.rl.controller;
import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping;
@Controller @RequestMapping("/test1") //当前Controller的namespace,防止不同的Controller中方名重复的问题 public class Test1Controller {
/** * 浏览器中的访问地址是：http://localhost:8080/springmvc2/test1/toAjax.do * @return */ @RequestMapping("/toAjax.do") public String toAjax() { return "ajax"; } } |
5 TestController的内容如下：
| package com.rl.controller;
import java.io.IOException; import java.io.PrintWriter; import java.sql.Date; import java.text.SimpleDateFormat; import java.util.HashMap; import java.util.Map;
import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.propertyeditors.CustomDateEditor; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.ServletRequestDataBinder; import org.springframework.web.bind.annotation.InitBinder; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.servlet.ModelAndView;
import com.rl.model.Person; import com.rl.model.User;
@Controller @RequestMapping("test") //当前Controller的namespace,防止不同Controller中方法名重复的问题 public class TestController {
public TestController() { System.out.println("Controller被创建...."); }
/** * desc:返回值类型是String,含义是ModelAndView中的viewname * * @RequestMapping:请求方法的映射，内容最好和方法名称一致 * @author 涂作权 * @return */ @RequestMapping("/hello.do") public String hello() { return "index"; }
/** * desc:HttpServletRequest可以直接定义在方法的参数列表中来使用 * * @param request * @author 涂作权 * @return */ @RequestMapping("/getParam.do") public String getParam(HttpServletRequest request) { String name = request.getParameter("name"); System.out.println(name); return "index"; }
/** * desc:在参数的列表中来直接定义要接收的参数，参数名(形象)一定要 * 和请求中传递的参数名(实参)一致，数据类型会自动的转换，如果数据 * 类型转换出错会报400错误？？？ * * @param name * @param id * @param age * @param address * @param birthday * @author 涂作权 * @return */ @RequestMapping("/getParam1.do") public String getParam1(String name, Integer id, Integer age, String address, Date birthday) { System.out.println("姓名：" + name + " id：" + id.getClass() + " 年龄：" + age + " 地址： " + address + "生日：" + birthday); return "index"; }
/** * desc:多选的接收在参数列表中定义数组来接收，参数名（形参）一定要和请求中传递的参数名(实参)一致，数据类型会自动的转换， * 如果以字符串来接收的话会接收到一个以逗号分隔的一个字符串 * * @author 涂作权 * @param favor * @return */ @RequestMapping("/getParam2.do") public String getParam2(String[] favor) { System.out.println(favor); for (String fa : favor) { System.out.println(fa); } return "index"; }
/** * desc:接收实体对象，直接在参数列表中定义要接收的实体类就可以了，每次访问的时候springmvc会自动创建相关参数的实体对象，对象中 * 的属性值是通过请求传递过来并且注入到对象中 * * @author 涂作权 * @param person * @param user * @param name * @return */ @RequestMapping("/getParamByObj.do") public String getParamByObj(Person person, User user, String name) { System.out.println(person); System.out.println(user); return "index"; }
/** * 不建议使用 desc:返回值类型定义成ModelAndView，把数据和视图注入到ModelAndView中返回即可 * * @return * @author 涂作权 * @throws Exception */ @RequestMapping("/returnData.do") public ModelAndView returnData() throws Exception { Person p = new Person(); p.setId(1); p.setName("zhangsan"); p.setAge(22); p.setAddress("beijing"); p.setBirthday(new SimpleDateFormat("yyyy-MM-dd").parse("2013-08-05")); Map<String, Object> map = new HashMap<String, Object>(); // 相当于request.setAttribute("person", p); map.put("person", p);
return new ModelAndView("index", map); }
/** * 不建议使用 desc:返回值是String类型：viewName,参数是map,是ModelAndView中 map,不是接收参数的。 * * @author 涂作权 * @param map * @return * @throws Exception */ @RequestMapping("/returnData1.do") public String returnData1(Map<String, Object> map) throws Exception { Person p = new Person(); p.setId(1); p.setName("zhangsan"); p.setAge(22); p.setAddress("beijing"); p.setBirthday(new SimpleDateFormat("yyyy-MM-dd").parse("2013-08-05")); // 相当于request.setAttribute("person", p); map.put("person", p); return "index"; }
/** * 在参数列表中定义Model来给页面返回数据 desc:建议使用 * * @author 涂作权 * @param model * @return * @throws Exception */ @RequestMapping("/returnData2.do") public String returnData2(Model model) throws Exception { Person p = new Person(); p.setId(1); p.setName("zhangsan"); p.setAge(22); p.setAddress("beijing"); p.setBirthday(new SimpleDateFormat("yyyy-MM-dd").parse("2013-08-05")); // 相当于request.setAttribute("person", p); model.addAttribute("person", p); return "index"; }
/** * desc：method=RequestMethod.POST该方法只能使用method指定的请求方式来指定 */ @RequestMapping(value = "/getParamByObjWithMethod.do", method = RequestMethod.POST) public String getParamByObjWithMethod(Person person) { System.out.println(person); return "success"; }
/** * desc:在参数列表中直接来定义HttpServletResponse，并且方法的返回值要定义void为ajax提供调用 * * @author 涂作权 * @param name * @param response */ @RequestMapping("/ajax.do") public void ajax(String name, HttpServletResponse response) { String result = "hello" + name; try { response.getWriter().write(result); } catch (IOException e) { e.printStackTrace(); } }
/** * desc:直接在参数列表中来定义PrintWriter建议使用 * * @param name * @param out */ @RequestMapping("/ajax1.do") public void ajax1(String name, PrintWriter out){ String result = "hello " + name; out.write(result); }
@RequestMapping("/toAjax.do") public String toAjax(){ return "ajax"; }
/** * 在同一个Controller中重定向语法 return后面 redirect:当前 * Controller中方法的@RequestMapping的值 * * @return */ @RequestMapping("/redirectToAjax.do") public String redirectToAjax(){ return "redirect:toAjax.do"; }
/** * controller之间的重定向redirect:后面要有"/",代表从项目的根目录开始 * * @return * @author 涂作权 */ @RequestMapping("/redirectToAjax1.do") public String redirectToAjax1(){ return "redirect:/test1/toAjax.do"; }
/** * 单纯的转发 * * @author 涂作权 * @return */ @RequestMapping("/toForm.do") public String toForm(){ return "form"; }
/** * 用于转换数据类型 * @param binder */ @InitBinder public void initBinder(ServletRequestDataBinder binder){ binder.registerCustomEditor(Date.class, new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"), true)); } } |
6 UploadController的内容如下：
| package com.rl.controller;
import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Random;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.propertyeditors.CustomDateEditor; import org.springframework.stereotype.Controller; import org.springframework.web.bind.ServletRequestDataBinder; import org.springframework.web.bind.annotation.InitBinder; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.multipart.MultipartHttpServletRequest;
import com.rl.model.Person;
@Controller @RequestMapping("/upload") //当前Controller的namespace，防止不同Controller中方法名重复的问题 public class UploadController {
@RequestMapping("/uploadPic.do") public String uploadPic(Person person, HttpServletRequest request) throws Exception { // 把request转换成MultipartHttpServletRequest MultipartHttpServletRequest mr = (MultipartHttpServletRequest) request; // 获得文件，这里的pic是表单中的file字段对应的属性名称 MultipartFile mf = mr.getFile("pic"); // 获得文件的字节数组 byte[] fbyte = mf.getBytes(); // 获得当前时间的最小精度 String fileName = new SimpleDateFormat("yyyyMMddHHmmssSSS") .format(new Date()); // 追加三位随机数 Random random = new Random(); for (int i = 0; i < 3; i++) { fileName = fileName + random.nextInt(10); } // 获得原始文件名 String oriFileName = mf.getOriginalFilename(); // 获得后缀名 String suffix = oriFileName.substring(oriFileName.lastIndexOf(".")); // 拿到服务器的根目录 String realPath = request.getSession().getServletContext() .getRealPath("/"); // 创建文件输出流 OutputStream out = new FileOutputStream(new File(realPath + "/upload/" + fileName + suffix)); out.write(fbyte); out.flush(); out.close(); return "success"; }
@InitBinder public void initBinder(ServletRequestDataBinder binder) { binder.registerCustomEditor(Date.class, new CustomDateEditor( new SimpleDateFormat("yyyy-MM-dd"), true)); } } |
7 MyInterceptor的内容如下：
| package com.rl.interceptor;
import java.util.Map;
import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAndView;
public class MyInterceptor implements HandlerInterceptor{
/** * 执行时机：在视图解析器解析完毕之后，页面一旦报错异常会抛到该方法中， * try{}catch后面的finally,用于系统监控 */ public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception ex) throws Exception { System.out.println("afterCompletion..................."); System.out.println("----------------------------------"); ex.printStackTrace(); System.out.println("----------------------------------"); }
/** * 执行时机：Controller执行完毕,视图解析器解析之前来执行 * 注意：此案例中如果是测试异步，这里的mv是null，此处会报错。 * 解决办法是注释掉springmvc-servlet.xml中的拦截器的配置内容 */ public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView mv) throws Exception { Map<String, Object> map = mv.getModel(); map.put("test", "append something..."); System.out.println("postHandle..."); }
/** * 返回值数据类型是布尔类型：true放行， false是阻止访问 * 执行时机：Controller执行之前 * * 最常用的应用场景就是权限的拦截 */ public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object obj) throws Exception { System.out.println("preHandle..."); System.out.println(obj.getClass().getName()); return true; } } |
8 Person的内容如下：
| package com.rl.model;
import java.util.Date;
publicclass Person { Integer id; String name; Integer age; String address; Date birthday;
/** * @return the id */ public Integer getId() { returnid; }
/** * @param id the id to set */ publicvoid setId(Integer id) { this.id = id; }
/** * @return the name */ public String getName() { returnname; }
/** * @param name the name to set */ publicvoid setName(String name) { this.name = name; }
/** * @return the age */ public Integer getAge() { returnage; }
/** * @param age the age to set */ publicvoid setAge(Integer age) { this.age = age; }
/** * @return the address */ public String getAddress() { returnaddress; }
/** * @param address the address to set */ publicvoid setAddress(String address) { this.address = address; }
/** * @return the birthday */ public Date getBirthday() { returnbirthday; }
/** * @param birthday the birthday to set */ publicvoid setBirthday(Date birthday) { this.birthday = birthday; } } |
9 User的内容如下
| package com.rl.model;
publicclass User { Integer id; String name; /** * @return the id */ public Integer getId() { returnid; } /** * @param id the id to set */ publicvoid setId(Integer id) { this.id = id; }
/** * @return the name */ public String getName() { returnname; } /** * @param name the name to set */
publicvoid setName(String name) { this.name = name; }
@Override public String toString() { return"User [id=" +id +", name=" +name +"]"; } } |
10 ajax.jsp的内容如下：
| <%@page language="java"import="java.util.*"pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %>
<!DOCTYPEHTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <basehref="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title> <metahttp-equiv="pragma"content="no-cache"> <metahttp-equiv="cache-control"content="no-cache"> <metahttp-equiv="expires"content="0"> <metahttp-equiv="keywords"content="keyword1,keyword2,keyword3"> <metahttp-equiv="description"content="This is my page"> <scripttype="text/javascript"src="js/jquery.js"></script> <scripttype="text/javascript"> $(function(){ $("#mybutton").click(function(){ console.log("test"); varmytext = $("#mytext").val(); $.ajax({ url:"test/ajax1.do", type:"post", dataType:"text", data:{ name:mytext }, success:function(responseText){ alert(responseText); }, error:function(){ alert("system error"); } }); }); });
</script> </head>
<body> <inputtype="text"id="mytext"/> <inputid="mybutton"type="button"value="click"/> </body> </html> |
11 form.jsp的内容如下：
| <%@page language="java"import="java.util.*"pageEncoding="utf-8"%>
<!DOCTYPEHTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head>
<title>My JSP 'form.jsp' starting page</title>
</head>
<body> <formaction="upload/uploadPic.do"method="post"enctype="multipart/form-data"> id：<inputname="id"type="text"/><br> name：<inputname="name"type="text"/><br> age：<inputname="age"type="text"/><br> address：<inputname="address"type="text"/><br> birthday：<inputname="birthday"type="text"/><br> pic:<inputtype="file"name="pic"/><br> <inputvalue="submit"type="submit"/> </form> </body> </html> |
12 index.jsp的内容如下：
| <%@page language="java"import="java.util.*"pageEncoding="utf-8"%> <%@taglib uri="http://java.sun.com/jsp/jstl/fmt"prefix="fmt"%>
<!DOCTYPEHTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body> <h1>${person.id}</h1> <h1>${person.name}</h1> <h1>${person.age}</h1> <h1>${person.address}</h1> <h1><fmt:formatDatevalue="${person.birthday }"pattern="yyyy-MM-dd"/></h1> <h1>${test }</h1> </body> </html> |
13 success.jsp的内容如下：
| <%@page language="java"import="java.util.*"pageEncoding="utf-8"%>
<!DOCTYPEHTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head>
<title>My JSP 'success.jsp' starting page</title>
</head>
<body> success<br> </body> </html> |
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