Struts2 入门实例代码 博客分类: struts2 StrutsJSPfreemarkerApacheXML
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2024-03-22 13:26:40
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Struts.xml 文件
HelloWorld.xml
LogonInterceptor.java
Logon.java
UserAction.java
ExampleSupport.java
User.java
DataBaseMock.java
Logon-validation.xml
UserAction-validation.xml
package.properties
Logon.jsp
userList.jsp
userForm.jsp
应用程序目录结构
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <constant name="struts.enable.DynamicMethodInvocation" value="true" /> <constant name="struts.devMode" value="true" /> <include file="helloworld.xml"/> </struts>
HelloWorld.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <include file="struts-default.xml"/> <package name="helloworld" namespace="/" extends="struts-default"> <interceptors> <interceptor name ="authentication" class ="com.jamesby.struts2.LogonInterceptor"/> <interceptor-stack name="helloWorldStack"> <interceptor-ref name="authentication"/> <interceptor-ref name="paramsPrepareParamsStack"/> </interceptor-stack> </interceptors> <default-interceptor-ref name="helloWorldStack"/> <global-results> <result name="login">/WEB-INF/jsp/Logon.jsp</result> </global-results> <action name="Logon_*" method="{1}" class="com.jamesby.struts2.Logon"> <interceptor-ref name="paramsPrepareParamsStack"/> <result type="redirect-action">Main</result> <result name="input">/WEB-INF/jsp/Logon.jsp</result> </action> <action name="crud" method="{1}" class="com.jamesby.struts2.UserAction"> <result name="list">/WEB-INF/jsp/userList.jsp</result> <result name="success" type="redirect-action">crud!list</result> <result name="input">/WEB-INF/jsp/userForm.jsp</result> </action> <action name="*" class="com.jamesby.struts2.ExampleSupport"> <result>/WEB-INF/jsp/{1}.jsp</result> </action> </package> </struts>
LogonInterceptor.java
package com.jamesby.struts2; import java.util.Map; import com.jamesby.struts2.persist.User; import com.opensymphony.xwork2.Action; import com.opensymphony.xwork2.ActionInvocation; import com.opensymphony.xwork2.interceptor.AbstractInterceptor; public class LogonInterceptor extends AbstractInterceptor{ @Override public String intercept(ActionInvocation ai) throws Exception { Map session = ai.getInvocationContext().getSession(); User user = (User) session.get("user"); if (null != user) { return ai.invoke(); } else { return Action.LOGIN; } } }
Logon.java
package com.jamesby.struts2; import java.util.Map; import org.apache.struts2.interceptor.SessionAware; import org.apache.struts2.interceptor.validation.SkipValidation; import com.jamesby.struts2.persist.DataBaseMock; import com.jamesby.struts2.persist.User; import com.opensymphony.xwork2.ActionSupport; public class Logon extends ActionSupport implements SessionAware { private Map session; public void setSession(Map session) { this.session = session; } @SkipValidation public String doInput() throws Exception { return INPUT; } public String doLogon() throws Exception { User user = DataBaseMock.selectUserByUsernameAndPassword(getUsername(), getPassword()); if (null == user) return INPUT; session.put("user", user); return SUCCESS; } private String username; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } private String password; public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } }
UserAction.java
package com.jamesby.struts2; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import org.apache.struts2.interceptor.validation.SkipValidation; import com.jamesby.struts2.persist.DataBaseMock; import com.jamesby.struts2.persist.User; import com.opensymphony.xwork2.ActionSupport; public class UserAction extends ActionSupport { private User user=new User(); private List<User> userList; public List<HashMap> getSexArray() { List<HashMap> sexArray = new ArrayList<HashMap>(); HashMap male = new HashMap(); male.put("key",new Integer(1)); male.put("value","男"); HashMap female = new HashMap(); female.put("key",new Integer(2)); female.put("value","女"); sexArray.add(male); sexArray.add(female); return sexArray; } public List<HashMap> getFromArray() { List<HashMap> fromArray = new ArrayList<HashMap>(); HashMap bj = new HashMap(); bj.put("id",new Integer(1)); bj.put("name","北京"); HashMap sh = new HashMap(); sh.put("id",new Integer(2)); sh.put("name","上海"); HashMap tj = new HashMap(); tj.put("id",new Integer(3)); tj.put("name","天津"); fromArray.add(bj); fromArray.add(sh); fromArray.add(tj); return fromArray; } @SkipValidation public String doList() throws Exception { userList = DataBaseMock.selectAllUser(); return "list"; } @SkipValidation public String doInput() { return INPUT; } public String doSave() { if (null == user.getUserid()) { user.setUserid(new Integer(DataBaseMock.getNewUserId())); DataBaseMock.saveUser(user); }else { DataBaseMock.updateUser(user); } return SUCCESS; } @SkipValidation public String doRead() { user = DataBaseMock.getUser(user.getUserid()); return INPUT; } @SkipValidation public String doDelete() { DataBaseMock.deleteUser(user); return SUCCESS; } public List<User> getUserList() { return userList; } public void setUserList(List<User> userList) { this.userList = userList; } public User getUser() { return user; } public void setUser(User user) { this.user = user; } }
ExampleSupport.java
package com.jamesby.struts2; import com.opensymphony.xwork2.ActionSupport; public class ExampleSupport extends ActionSupport { }
User.java
package com.jamesby.struts2.persist; public class User { private Integer userid; private String username; private String password; private int sex; private int age; private int from; public int getFrom() { return from; } public void setFrom(int from) { this.from = from; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public int getSex() { return sex; } public void setSex(int sex) { this.sex = sex; } public Integer getUserid() { return userid; } public void setUserid(Integer userid) { this.userid = userid; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } }
DataBaseMock.java
package com.jamesby.struts2.persist; import java.util.ArrayList; import java.util.List; public class DataBaseMock { private static List<User> _cache = new ArrayList<User>(); private static int userid = 0; static { User user = new User(); user.setUserid(new Integer(0)); user.setUsername("admin"); user.setPassword("12345688"); user.setFrom(1);// 北京 user.setSex(1);// 男 user.setAge(18); _cache.add(user); } public static User selectUserByUsernameAndPassword(String username,String password) { for (User u : _cache) { if (u.getUsername().equals(username)&&u.getPassword().equals(password)) { return u; } } return null; } public static List<User> selectAllUser() { return _cache; } public static int getNewUserId() { return ++userid; } public static void saveUser(User user) { _cache.add(user); } public static void updateUser(User user) { deleteUser(user); saveUser(user); } public static void deleteUser(User user) { for (User u : _cache) { if (u.getUserid().intValue() == user.getUserid().intValue()) { _cache.remove(u); break; } } } public static User getUser(Integer userid) { return _cache.get(userid); } }
Logon-validation.xml
<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0.2//EN" "http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd"> <validators> <field name="username"> <field-validator type="requiredstring"> <message key="requiredstring"/> </field-validator> </field> <field name="password"> <field-validator type="requiredstring"> <message key="requiredstring"/> </field-validator> </field> </validators>
UserAction-validation.xml
<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0.2//EN" "http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd"> <validators> <field name="user.username"> <field-validator type="requiredstring"> <message key="errors.required.username"/> </field-validator> </field> <field name="user.password"> <field-validator type="requiredstring"> <message key="errors.required.password"/> </field-validator> </field> <field name="user.sex"> <field-validator type="required"> <message key="errors.required.sex"/> </field-validator> </field> <field name="user.age"> <field-validator type="required" short-circuit="true"> <message key="errors.required.age"/> </field-validator> <field-validator type="int"> <param name="min">18</param> <param name="max">65</param> <message key="errors.required.age.limit"/> </field-validator> </field> <field name="user.from"> <field-validator type="required"> <message key="errors.required.from"/> </field-validator> </field> </validators>
package.properties
requiredstring = $\{getText(fieldName)} is required. password = Password username = User Name main.message = This is main page................... label.userList= All User List user.username=Username user.password=Password user.sex=Sex user.age=Age user.from=From errors.required.username=Username is required errors.required.password=Password is required errors.required.sex=Sex is Required errors.required.from=From is Required errors.required.age.limit=Age between 18 and 65 errors.required.age.limit=Age between 18 and 65
Logon.jsp
<%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <title>Logon</title> </head> <body> <s:form action="Logon!logon"> <s:textfield label="%{getText('username')}" name="username"/> <s:password label="%{getText('password')}" name="password" /> <s:submit/> </s:form> </body> </html>
userList.jsp
<%@ page contentType="text/html;charset=GBK"%> <%@taglib prefix="s" uri="/struts-tags" %> <head> <title><s:text name="label.userList"/></title> </head> <s:url id="url" action="crud!input" /> <a href="<s:property value="#url"/>">Add New User</a> <br> <table border="1"> <tr class="<s:if test="#status.even">even</s:if><s:else>odd</s:else>"> <td>用户ID</td> <td>用户名</td> <td>性别</td> <td>年龄</td> <td>来自</td> <td>修改</td> <td>删除</td> </tr> <s:iterator value="userList" status="status"> <tr class="<s:if test="#status.even">even</s:if><s:else>odd</s:else>"> <td><s:property value="userid" /></td> <td><s:property value="username" /></td> <td> <s:if test="sex==1">男</s:if> <s:else>女</s:else> </td> <td><s:property value="age" /></td> <td> <s:if test="from==1">北京</s:if> <s:if test="from==2">上海</s:if> <s:if test="from==3">天津</s:if> </td> <td> <a href="crud!read.action?user.userid=<s:property value="userid" />">修改</a> </td> <td> <a href="crud!delete.action?user.userid=<s:property value="userid" />">删除</a> </td> </tr> </s:iterator> </table>
userForm.jsp
<%@ page contentType="text/html;charset=GBK"%> <%@taglib prefix="s" uri="/struts-tags" %> User Form <s:form action="crud!save.action" method="post"> <s:textfield required="true" name="user.username" value="%{user.username}" label="%{getText('user.username')}" size="40"/> <s:textfield required="true" name="user.password" value="%{user.password}" label="%{getText('user.password')}" size="40"/> <s:radio required="true" name="user.sex" listKey="key" listValue="value" value="%{user.sex}" label="%{getText('user.sex')}" list="sexArray"/> <s:textfield required="true" name="user.age" value="%{user.age}" label="%{getText('user.age')}" size="40"/> <s:select label="%{getText('user.from')}" name="user.from" headerKey="" headerValue="Select From" list="fromArray" listKey="id" listValue="name" value="user.from" required="true"/> <s:hidden name="user.userid" value="%{user.userid}"/> <s:submit value="Submit"/> <s:submit value="Cancel" name="redirect-action:crud!list"/> </s:form>
应用程序目录结构
WEB-INF │ web.xml │ ├─classes │ │ commons-logging.properties │ │ helloworld.xml │ │ log4j.properties │ │ struts.properties │ │ struts.xml │ │ │ └─com │ └─jamesby │ └─struts2 │ │ ExampleSupport.class │ │ Logon-validation.xml │ │ Logon.class │ │ LogonInterceptor.class │ │ package.properties │ │ UserAction-validation.xml │ │ UserAction.class │ │ │ └─persist │ DataBaseMock.class │ User.class │ ├─jsp │ Logon.jsp │ Main.jsp │ userForm.jsp │ userList.jsp │ ├─lib commons-collections-3.1.jar commons-logging-1.0.4.jar freemarker-2.3.8.jar log4j-1.2.9.jar ognl-2.6.11.jar struts2-core-2.0.6.jar xwork-2.0.1.jar
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