文章目錄

• • • 目錄結(jié)構(gòu)
    • web.xml
    • SpringMVC核心配置文件：md5-servlet.xml
    • Controller類
    • /jsp/md5/md5_query.jsp
    • 相關(guān)依賴：pom.xml

目錄結(jié)構(gòu)

web.xml

<web-app 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_3_0.xsd"version="3.0"><!-- ContextLoaderListener實(shí)現(xiàn)了ServletContextListener這個(gè)接口，在啟動(dòng)web容器時(shí)會(huì)執(zhí)行，完成spring的啟動(dòng)和初始化。 若配置了contextConfigLocation上下文參數(shù)則按照該參數(shù)指定的路徑和文件名去讀取spring配置文件， 否則默認(rèn)會(huì)去讀/WEB-INF/applicationContext.xml --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 此參數(shù)指定spring初始化時(shí)讀取的配置文件，如果要讀取多個(gè)xml文件，可以寫在一起并一“,”號(hào)分隔。也可以采用如applicationContext-*.xml通配符的格式。 classpath:是類路徑,此處可替換為/WEB-INF/classes/ --><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring/applicationContext.xml</param-value></context-param><!-- DispatcherServlet是SpringMVC的總調(diào)度類，我們定義了一個(gè)名為md5的servlet并將url為/的請(qǐng)求映射到這個(gè)servlet，這樣在請(qǐng)求到達(dá)時(shí)就會(huì)執(zhí)行此類。 若配置了contextConfigLocation sevlet參數(shù)則按照該參數(shù)指定的路徑和文件名去讀取springMVC的核心配置文件， 否則默認(rèn)會(huì)去讀/WEB-INF/servlet名稱-servlet.xml load-on-startup定義了此servlet啟動(dòng)優(yōu)先級(jí)，1表示第一個(gè)啟動(dòng)，servlet一般在web容器啟動(dòng)時(shí)初始化 --><servlet><servlet-name>md5</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring/servlet/md5-servlet.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>md5</servlet-name><url-pattern>/</url-pattern></servlet-mapping><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list> </web-app>

SpringMVC核心配置文件：md5-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:p="http://www.springframework.org/schema/p"xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xmlns:util="http://www.springframework.org/schema/util"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd"><!--激活@Controller模式 --><mvc:annotation-driven /><!--對(duì)包中的所有類進(jìn)行掃描，以完成Bean創(chuàng)建和自動(dòng)依賴注入的功能 --><context:component-scanbase-package="com.lwt.bigtools.controller" /><beanclass="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" /><!-- 這個(gè)bean用于將Controller類方法的返回值映射為實(shí)際的文件，此處為加前綴后綴: /jsp/md5/***.jsp --><bean id="viewResolver"class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix"><value>/jsp/md5/</value></property><property name="suffix"><value>.jsp</value></property></bean><!-- 此處使得DispatcherServlet將靜態(tài)資源文件交給web容器默認(rèn)處理，如js,css文件等 --><mvc:default-servlet-handler /><!-- <mvc:resources location="/skin" mapping="/resources/**" cache-period="10000" /> --> </beans>

Controller類

為一普通POJO類

@Controller public class Md5Query {// url為/md5的請(qǐng)求會(huì)被DispatcherServlet發(fā)送到此方法執(zhí)行，其中參數(shù)Md5Form攜帶請(qǐng)求提交的參數(shù)信息。最終@RequestMapping(value = "/md5")public String query(Md5Form md5Form, Model model) {String source = md5Form.getSource();String res = "";if (!StringUtil.isEmpty(source)) {res = Md5Util.query(source); // 返回字符串source的MD5字符串表示形式}model.addAttribute("source", source);model.addAttribute("result", res);return "md5_query"; // 最終視圖會(huì)被viewResolver映射到 /jsp/md5/md5_query.jsp這個(gè)文件返回給瀏覽器}// 這是個(gè)ajax請(qǐng)求最終到達(dá)的方法@ResponseBody@RequestMapping(value = "/md5ajax")public Map<String, Object> md5Ajax(String source) {Map<String, Object> modelMap = new HashMap<String, Object>();modelMap.put("res", Md5Util.query(source));return modelMap;} }

/jsp/md5/md5_query.jsp

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <basehref="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${pageContext.request.contextPath}/"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>md5查詢</title><style type="text/css"> input[type="text"] {/* float: left; */} </style> <link href="<c:url value='skin/css/common.css'/>" rel="stylesheet"type="text/css" /> <script src="skin/js/jquery-1.11.3.min.js"></script> <script src="skin/js/ajaxsubmit.js"></script><script type="text/javascript">$(function() {$("form").submit(function() {$.post("md5ajax", {"source" : $("form input[name='source']").val()}, function(data, status) {$("#res").html(data.res);});return false;});}); </script> </head><body><form action="" method="post"><input type="text" name="source"> <input type="submit"value="查詢"></form><div><p id="res"></p></div> </body> </html>

相關(guān)依賴：pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.lwt</groupId><artifactId>bigtools</artifactId><packaging>war</packaging><version>0.0.1</version><name>bigtools Maven Webapp</name><url>http://maven.apache.org</url><!-- 定義相關(guān)版本號(hào) --><properties><java-version>1.7</java-version><org.springframework-version>3.1.4.RELEASE</org.springframework-version><jackson.version>2.6.3</jackson.version><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><!-- 定義依賴 --><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency><dependency><groupId>jstl</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version><scope>provided</scope></dependency><dependency><groupId>javax.servlet.jsp</groupId><artifactId>jsp-api</artifactId><version>2.1</version><scope>provided</scope></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${org.springframework-version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${org.springframework-version}</version></dependency><!-- 提供對(duì)ajax請(qǐng)求json數(shù)據(jù)形式的返回，若沒有則ajax請(qǐng)求會(huì)返回406(Not Acceptable)錯(cuò)誤 --><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-core</artifactId><version>${jackson.version}</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>${jackson.version}</version></dependency></dependencies><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>2.3.2</version><configuration><source>${java-version}</source><target>${java-version}</target><encoding>UTF-8</encoding></configuration></plugin></plugins><finalName>bigtools</finalName></build> </project>

轉(zhuǎn)載于:https://www.cnblogs.com/xuejianbest/p/10284915.html

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