我正在开发一个 Spring MVC 项目，该项目的主页有两个输入字段。两个输入字段都是 String 类型。但是 regNo 字段获取数字，如果用户输入 regNo，它应该被带到 Controller 中的相应方法。如果用户输入了名称，则应将其带到 Controller 中的相应方法。
网络.xml
<web-app version="2.2" id="WebApp_ID">
<!-- <display-name>Archetype Created Web Application</display-name> -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/appContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/dispatcher-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/mvc/*</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>/WEB-INF/jsp/template.jsp</welcome-file>
</welcome-file-list>
</web-app>
1) id="WebApp_ID"的用途是什么？
瓷砖.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE tiles-definitions PUBLIC
"-//Apache Software Foundation//DTD Tiles Configuration 2.1//EN"
"http://tiles.apache.org/dtds/tiles-config_2_1.dtd">
<tiles-definitions>
<definition name="template" template="/WEB-INF/jsp/template.jsp">
<put-attribute name="title" value=""/>
<put-attribute name="header" value="/WEB-INF/jsp/header.jsp" />
<put-attribute name="body" value="/WEB-INF/jsp/ads.jsp "/>
<put-attribute name="center" value="/WEB-INF/jsp/ads.jsp" />
<put-attribute name="footer" value="/WEB-INF/jsp/footer.jsp" />
</definition>
<definition name="header" extends="template">
<put-attribute name="title" value="" />
<put-attribute name="body" value="/WEB-INF/jsp/ads.jsp" />
</definition>
<definition name="numberResult" extends="template">
<put-attribute name="title" value="" />
<put-attribute name="body" value="/WEB-INF/jsp/nResult.jsp" />
</definition>
<definition name="nameResult" extends="template">
<put-attribute name="title" value="" />
<put-attribute name="body" value="/WEB-INF/jsp/neResult.jsp" />
</definition>
调度器-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">
<context:component-scan base-package="com.ProjectCtxt.www.controller"/>
<mvc:annotation-driven />
<mvc:resources mapping="/resources/**" location="/resources/" />
<!-- <bean id="jspViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" /> -->
<bean class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
<property name="definitions">
<list>
<value>/WEB-INF/tiles.xml</value>
</list>
</property>
</bean>
<bean class="org.springframework.web.servlet.view.tiles2.TilesViewResolver"/>
<bean id="tilesViewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass">
<value>
org.springframework.web.servlet.view.tiles2.TilesView
</value>
</property>
</bean>
</beans>
项目 Controller .java
@Controller("resultController")
public class ResultController {
private final ResultService resultService;
@Autowired
public ResultController(ResultService resultService) {
this.resultService = resultService;
}
@RequestMapping(value ="/template", method = RequestMethod.GET)
public String getPersonList(ModelMap model) {
System.out.println("We are coming into this place");
return "header";
}
@RequestMapping(value = "/search/s", method = RequestMethod.GET, params = { "regNo" })
public String getStudentResult(@RequestParam(value = "regNo", required = true) String regNo, ModelMap model){
System.out.println("I am coming here when I enter regNo and AJAX works");
model.addAttribute("studentResult",resultService.getStudentResult(regNo));
return "numberResult";
}
@RequestMapping(value = "/search/l/studentName={studentName}", method = RequestMethod.GET, params = { "studentName" })
public String anotherMethod(String studentName, ModelMap model){
return "nameResult";
}
}
标题.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<head>
<script src="http://code.jquery.com/jquery.min.js"></script>
</head>
<form method="GET" >
<input type="text" id="regNo" name="regNo" size="30" maxLength="50" placeholder="Enter Register Number"></input>
<input type="text" id="studentName" name="studentName" size="30" maxLength="50" placeholder="Enter Student Name"></input>
<button onclick="processInput();">Search
</button>
</form>
<script>
function processInput(){
if (document.getElementById('regNo').value !=""){
$.ajax({
type : 'GET',
url : "search/s",
data : { "regNo":$("#regNo").val()},
success : function(studentResult) {
//show your result
// alert("Value");
$('#displayArea').html(studentResult); }
});
}else if (document.getElementById('studentName').value !=""){
$.ajax({
type : 'GET',
url : "search/l",
data : { "studentName":$("#studentName").val(),
success : function(result) {
//show your result
}}
});
}
}
</script>
模板.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://tiles.apache.org/tags-tiles" prefix="tiles"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<center>
<table width="750" border="0" cellpadding="2" cellspacing="2" align="center">
<tr>
<td><tiles:insertAttribute name="header" />
</td>
</tr>
<tr>
<td><tiles:insertAttribute name="body" /></td>
</tr>
<tr>
<td height="225"><tiles:insertAttribute name="footer" />
</td>
</tr>
</table>
</center>
</html>
数字结果.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<c:out value="This is working"/>
<c:out value="${studentResult.name}"/><br/>
<c:out value="${studentResult.regNo}"/><br/>
<c:out value="${studentResult.deptName}"/><br/>
<c:out value="${studentResult.collName}"/><br/>
<div id="displayArea">
<c:out value="${studentResult.name}"/><br/>
<c:out value="${studentResult.regNo}"/><br/>
<c:out value="${studentResult.deptName}"/><br/>
<c:out value="${studentResult.collName}"/><br/>
</div>
2)用户在header.jsp中输入regNo，我希望结果显示在numberResult.jsp中
3) 我的第一个 url 是 localhost:8080/ProjectCtxt/mvc/template 转到主页。当我在输入字段中输入 regNo 时，我在浏览器中的 url 显示 localhost:8080/ProjectCtxt/mvc/template/regNo=123&studentName= 。我正在访问 getStudentResult 方法，因为我可以在控制台中看到我的 System.out，但我无法在浏览器中看到输出。
因为我使用的是 tiles，所以我不确定问题出在 tiles 解析器还是 AJAX。请你帮助我好吗？谢谢。
PS:请尽可能用数字回答所有问题，以便对其他人有所帮助。谢谢。
更新:我按如下方式更改了 header.jsp，现在我在 UI 中看到了“numberResult”。但我没有将 numberResult jsp 视为 template.jsp 的主体。我猜“numberResult”文本返回到 AJAX 的成功部分。
<input type="text" id="regNo" name="regNo" size="30" maxLength="50" placeholder="Enter Register Number"></input>
<input type="text" id="studentName" name="studentName" size="30" maxLength="50" placeholder="Enter Student Name"></input>
<input id="inputFields" type="button" value="Search" />
<script>
$(document).ready(function(){
$('#inputFields').click(function(){
processInput();
});
});
function processInput(){
if (document.getElementById('regNo').value !=""){
$.ajax({
type : 'GET',
url : "search/s",
data : { "regNo":$("#regNo").val()},
success : function(studentResult) {
//show your result
alert("Value");
$('#displayArea').html(studentResult); //this line displays text //"numberResult". But it doesn't change the jsp as well as the url. Now my url looks as //localhost:8080/mvc/template and the body of the jsp doesn't have numberResult.jsp
}
});
}else if (document.getElementById('studentName').value !=""){
$.ajax({
type : 'GET',
url : "search/l",
data : { "studentName":$("#studentName").val(),
success : function(result) {
//show your result
}}
});
}
}
</script>
<div id="displayArea">
<c:out value="${studentResult.name}"/><br/>
<c:out value="${studentResult.regNo}"/><br/>
<c:out value="${studentResult.deptName}"/><br/>
<c:out value="${studentResult.collName}"/><br/>
</div>
最佳答案
尝试将注解@ResponseBody 添加到您的 Controller
@RequestMapping(value = "/search/s", method = RequestMethod.GET, params = { "regNo" })
@ResponseBody
public String getStudentResult(@RequestParam(value = "regNo", required = true) String regNo, ModelMap model){
System.out.println("I am coming here when I enter regNo and AJAX works");
model.addAttribute("studentResult",resultService.getStudentResult(regNo));
return "success";
}
关于java - 如何使用 AJAX 响应修改 Spring mvc 项目中的现有 url？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26136283/