記憶隨着季節輪迴,留下幾隻腳印。
本人開發環境爲win7 ,開發工具eclipse;jre1.8.0_31
下載的包大多數都是最新版本~當然只限於2015的最新~
jdk struts2等安裝此處省略。
1.maven安裝與環境配置,問一下度娘~或點擊下面鏈接:
http://www.cnblogs.com/smile2010/archive/2011/11/22/2259535.html
http://blog.csdn.net/yyywyr/article/details/20304169
2.eclipse maven上配置:
http://jingyan.baidu.com/article/5d368d1e306a913f61c05743.html
3.項目開發
3.1項目創建
首先創建maven project,問度娘~這個有很多
創建完後生成目錄如下
3.2配置文件
3.2.1 pom.xml的配置
<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>qq</groupId>
<artifactId>testSSM</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>testSSM Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<spring.version>4.1.5.RELEASE</spring.version>
<mybatis.version>3.2.8</mybatis.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- 導入java ee jar 包 -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
</dependency>
<!-- 導入struts 包 -->
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-core</artifactId>
<version>2.3.4</version>
</dependency>
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-json-plugin</artifactId>
<version>2.3.4</version>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
<scope>provided</scope>
</dependency>
<!-- 導入mybatis包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.6</version>
</dependency>
<!-- mybatis/spring包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!-- mybatis核心包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- spring核心包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
<build>
<finalName>testSSM</finalName>
</build>
</project>
當然上面代碼也包含了spring和mybatis的依賴包。maven管理下的項目好像不允許將jar包直接粘貼到lib裏,通過配置dependency會把相應的包自動下載下來。如果需要特別配置,以下博客提供了兩種方式。
http://liugang594.iteye.com/blog/1677712
pom.xml詳解,可以點擊以下鏈接,寫的很詳細:
http://blog.csdn.net/longeremmy/article/details/9670619
http://my.oschina.net/zh119893/blog/232896
3.2.2 struts.xml配置文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<constant name="struts.enable.DynamicMethodInvocation" value="false" />
<constant name="struts.devMode" value="true" />
<package name="default" namespace="/" extends="json-default">
<default-action-ref name="index" />
<global-results>
<result name="error">/WEB-INF/jsp/error.jsp</result>
</global-results>
<global-exception-mappings>
<exception-mapping exception="java.lang.Exception" result="error"/>
</global-exception-mappings>
<action name="Hello" class="testStruts.HelloWorld" method="Hello">
<result type="json"></result>
</action>
</package>
<!-- Add packages here -->
</struts>
這個配置文件是從struts blank裏邊拷貝過來的,裏面添加了一個action,是下面java文件的一個配置。注意package裏邊繼承了json-default;
3.2.3 web.xml文件配置
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Struts Blank</display-name>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
</web-app>
這個配置文件是從struts blank裏邊拷貝過來的,沒有特別之處。3.3 測試程序
3.3.1 java代碼
<pre name="code" class="java">package testStruts;
import com.opensymphony.xwork2.ActionSupport;
public class HelloWorld extends ActionSupport {
/**
*
*/
private static final long serialVersionUID = 1L;
private String msg;
private String json;
public String Hello(){
if(msg==null)
System.out.println("the msg is null");
else
System.out.println("the msg is"+msg);
json="just a test";
return SUCCESS;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public String getJson() {
return json;
}
public void setJson(String json) {
this.json = json;
}
}
注意struts裏邊傳參,要把屬性的setter和getter方法寫上,當然這只是方法之一。後話,在加上spring之後,爲了安全以及負載性選擇性的把一些屬性暴露出來,也就是說setter和getter方法選擇性的添加。
此類繼承了ActionSupport,當然實現方式不止這一種方式。一本書寫的不錯,推薦一下~《struts2 in action》裏面寫的原理很詳細~
<action name="Hello" class="testStruts.HelloWorld" method="Hello">
<result type="json"></result>
</action>
這是配置文件裏的相關配置,回調方法是hello,當然由於回調方法返回了一個常量SUCCESS,是result的name默認值,所以執行成功會返回type爲json的數據。
3.3.2 jsp頁面
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="UTF-8"%>
<html>
<body>
<h2>Hello World!</h2>
<form action="Hello" method="get">
<input name="msg" type="text">
<input type="submit" value="Submit" />
</form>
</body>
</html>
action指定將form提交後的數據轉給Hello的action,submit之後會以get方式在struts.xml裏找name爲Hello的action執行。
3.3運行結果:
web返回的結果
{"json":"just a test","msg":"546464"}