先按照文档，做一次：
1，建立WEB.XML：
代码 <!-- 段洪杰 --> <?xml version="1.0" encoding="UTF-8"?> <web-app> <display-name>Struts Blank</display-name> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <welcome-file-list> <welcome-file>index.html</welcome-file> </welcome-file-list> </web-app> <script type="text/javascript">render_code();</script>
文档中有一个org.apache.struts2.dispatcher.FilterDispatcher的filter 还有org.springframework.web.context.ContextLoaderListener
2.建SPRING的BEAN配置文件：applicationContext.xml
代码 <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"> <beans default-autowire="autodetect"> <!-- add your spring beans here --> </beans> <script type="text/javascript">render_code();</script>
3.建struts配置文件：
代码 <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <include file="example.xml"/> <!-- Add packages here --> </struts> <script type="text/javascript">render_code();</script>
演示了一下配置文件分块的方法，下面这个才起作用：
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd">
代码 <struts> <package name="example" namespace="/example" extends="struts-default"> <action name="HelloWorld" class="example.HelloWorld"> <result>/example/HelloWorld.jsp</result> </action> <action name="Login!*" method="{1}" class="example.Login"> <result name="input">/example/Login.jsp</result> <result type="redirect-action">Menu</result> </action> <action name="*" class="example.ExampleSupport"> <result>/example/{1}.jsp</result> </action> <!-- Add actions here --> </package> </struts> <script type="text/javascript">render_code();</script>
4，录入验证：Login-validation.xml 这个很象struts1.x
代码 <!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> <script type="text/javascript">render_code();</script>
5.建立资源文件package.properties，这个也很象struts1.x
代码 HelloWorld.message= Struts is up and running ... requiredstring = ${getText(fieldName)} is required. password = Password username = User Name Missing.message = This feature is under construction. Please try again in the next interation. <script type="text/javascript">render_code();</script>
6.搞个action类，和WW2一模一样：
代码 package example; public class Login extends ExampleSupport { public String execute() throws Exception { if (isInvalid(getUsername())) return INPUT; if (isInvalid(getPassword())) return INPUT; return SUCCESS; } private boolean isInvalid(String value) { return (value == null || value.length() == 0); } 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; } } <script type="text/javascript">render_code();</script>
7.搞个helloworld类，也和WW2一样： 这里调用了资源文件中的 message, 这里比struts1.X类似功能要直接，会好用一些
代码 package example; /** * <code>Set welcome message.</code> */ public class HelloWorld extends ExampleSupport { public String execute() throws Exception { setMessage(getText(MESSAGE)); return SUCCESS; } /** * Provide default valuie for Message property. */ public static final String MESSAGE = "HelloWorld.message"; /** * Field for Message property. */ private String message; /** * Return Message property. * * @return Message property */ public String getMessage() { return message; } /** * Set Message property. * * @param message Text to display on HelloWorld page. */ public void setMessage(String message) { this.message = message; } } <script type="text/javascript">render_code();</script>
8。搞个父类出来，这里只是演示用，所以空的
ExampleSupport.java
代码 package example; import com.opensymphony.xwork2.ActionSupport; /** * Base Action class for the Tutorial package. */ public class ExampleSupport extends ActionSupport { } <script type="text/javascript">render_code();</script>
9。可以测试一下了：
代码 package example; import com.opensymphony.xwork2.ActionSupport; import com.opensymphony.xwork2.config.entities.ActionConfig; import java.util.Map; import java.util.Collection; import java.util.List; public class LoginTest extends ConfigTest { public void FIXME_testLoginConfig() throws Exception { ActionConfig config = assertClass("example", "Login!input", "example.Login"); assertResult(config, ActionSupport.SUCCESS, "Menu"); assertResult(config, ActionSupport.INPUT, "/example/Login.jsp"); } public void testLoginSubmit() throws Exception { Login login = new Login(); login.setUsername("username"); login.setPassword("password"); String result = login.execute(); assertSuccess(result); } // Needs access to an envinronment that includes validators public void FIXME_testLoginSubmitInput() throws Exception { Login login = new Login(); String result = login.execute(); assertInput(result); Map errors = assertFieldErrors(login); assertFieldError(errors,"username","Username is required."); assertFieldError(errors,"password","Password is required."); } } <script type="text/javascript">render_code();</script> 代码 package example; import com.opensymphony.xwork2.ActionSupport; import junit.framework.TestCase; public class HelloWorldTest extends TestCase { public void testHelloWorld() throws Exception { HelloWorld hello_world = new HelloWorld(); String result = hello_world.execute(); assertTrue("Expected a success result!", ActionSupport.SUCCESS.equals(result)); assertTrue("Expected the default message!", hello_world.getText(HelloWorld.MESSAGE).equals(hello_world.getMessage())); } } <script type="text/javascript">render_code();</script>
代码 package example; import com.opensymphony.xwork2.ActionSupport; import com.opensymphony.xwork2.config.RuntimeConfiguration; import com.opensymphony.xwork2.config.entities.ActionConfig; import com.opensymphony.xwork2.config.entities.ResultConfig; import com.opensymphony.xwork2.config.providers.XmlConfigurationProvider; import java.util.Map; import java.util.List; import org.apache.struts2.StrutsTestCase; public class ConfigTest extends StrutsTestCase { protected void assertSuccess(String result) throws Exception { assertTrue("Expected a success result!", ActionSupport.SUCCESS.equals(result)); } protected void assertInput(String result) throws Exception { assertTrue("Expected an input result!", ActionSupport.INPUT.equals(result)); } protected Map assertFieldErrors(ActionSupport action) throws Exception { assertTrue(action.hasFieldErrors()); return action.getFieldErrors(); } protected void assertFieldError(Map field_errors, String field_name, String error_message) { List errors = (List) field_errors.get(field_name); assertNotNull("Expected errors for " + field_name, errors); assertTrue("Expected errors for " + field_name, errors.size()>0); // TODO: Should be a loop assertEquals(error_message,errors.get(0)); } protected void setUp() throws Exception { super.setUp(); XmlConfigurationProvider c = new XmlConfigurationProvider("struts.xml"); configurationManager.addConfigurationProvider(c); configurationManager.reload(); } protected ActionConfig assertClass(String namespace, String action_name, String class_name) { RuntimeConfiguration configuration = configurationManager.getConfiguration().getRuntimeConfiguration(); ActionConfig config = configuration.getActionConfig(namespace, action_name); assertNotNull("Mssing action", config); assertTrue("Wrong class name: [" + config.getClassName() + "]", class_name.equals(config.getClassName())); return config; } protected ActionConfig assertClass(String action_name, String class_name) { return assertClass("", action_name, class_name); } protected void assertResult(ActionConfig config, String result_name, String result_value) { Map results = config.getResults(); ResultConfig result = (ResultConfig) results.get(result_name); Map params = result.getParams(); String value = (String) params.get("actionName"); if (value == null) value = (String) params.get("location"); assertTrue("Wrong result value: [" + value + "]", result_value.equals(value)); } public void testConfig() throws Exception { assertNotNull(configurationManager); } } <script type="text/javascript">render_code();</script>
哦，测试通过！
10。看看表示层是如何用的？ HelloWorld.jsp
代码 <%@ page contentType="text/html; charset=UTF-8" %> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <title><s:text name="HelloWorld.message"/></title> </head> <body> <h2><s:property value="message"/></h2> <h3>Languages</h3> <ul> <li> <s:url id="url" action="HelloWorld"> <s:param name="request_locale">en</s:param> </s:url> <s:a href="%{url}">English</s:a> </li> <li> <s:url id="url" action="HelloWorld"> <s:param name="request_locale">es</s:param> </s:url> <s:a href="%{url}">Espanol</s:a> </li> </ul> </body> </html> <script type="text/javascript">render_code();</script>
Login.jsp
代码 <%@ page contentType="text/html; charset=UTF-8" %> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <title>Sign On</title> </head> <body> <s:form action="Login"> <s:textfield label="%{getText('username')}" name="username"/> <s:password label="%{getText('password')}" name="password" /> <s:submit/> </s:form> </body> </html> <script type="text/javascript">render_code();</script>
恭喜你！ 现在您现在已经可以用STRUTS2进行开发了！
