【ssh学习笔记】struts2的action与Spring

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//由struts-spring-plugin管理，不需要加@Resource,或在<span style="font-family: Arial; font-size: 14px; line-height: 26px;">applicationContext.xml</span>中也不需要配置该bean

//需要注入的对象也不需要加@Resource

public class JsonAction extends ActionSupport {/*** */private static final long serialVersionUID = -9040282050464969108L;private String isSuccess = "success";private List<Map<String, Object>> users = new ArrayList<Map<String, Object>>();private UserManager userManager;@JSON(name="result")public String getIsSuccess() {return isSuccess;}public void setIsSuccess(String isSuccess) {this.isSuccess = isSuccess;}public List<Map<String, Object>> getUsers() {return users;}public void setUsers(List<Map<String, Object>> users) {this.users = users;}@JSON(serialize=false)public UserManager getUserManager() {return userManager;}
<span style="white-space:pre">	</span>

<span style="white-space:pre">	</span>//@Resourcepublic void setUserManager(UserManager userManager) {this.userManager = userManager;}@Overridepublic String execute() throws Exception {List<User> userList = userManager.listUsers();for(User user : userList){Map<String, Object> jsonMap = new HashMap<String, Object>();jsonMap.put("id", user.getId());jsonMap.put("username", user.getUsername());jsonMap.put("password", user.getPassword());users.add(jsonMap);}return SUCCESS;}}

在struts.xml中，action的class属性指向具体的class时，action是由struts-spring-plugin来管理，即不需要在action中写上@Resource,@Component等annotaion

相反，如果将action完全交由spring来管理，则class属性设置为action的bean id,

	<package name="json" extends="json-default" namespace="/"><action name="jsonAction" class="<span style="font-family: Arial, Helvetica, sans-serif;">jsonAction</span><span style="font-family: Arial, Helvetica, sans-serif;">"  method="execute"></span>
<result type="json" /></action></package>

所以需要在action中添加annotation，或者在:applicationContext.xml添加bean

//完全由spring管理，需要加@Resource,或在<span style="font-family: Arial; font-size: 14px; line-height: 26px;">applicationContext.xml</span>中配置该bean

//需要注入的对象需要加@Resource

@Component

public class JsonAction extends ActionSupport {/*** */private static final long serialVersionUID = -9040282050464969108L;private String isSuccess = "success";private List<Map<String, Object>> users = new ArrayList<Map<String, Object>>();

	private UserManager userManager;@JSON(name="result")public String getIsSuccess() {return isSuccess;}public void setIsSuccess(String isSuccess) {this.isSuccess = isSuccess;}public List<Map<String, Object>> getUsers() {return users;}public void setUsers(List<Map<String, Object>> users) {this.users = users;}@JSON(serialize=false)

     @Resource

	public UserManager getUserManager() {return userManager;}
<span>	</span>

<span>	</span>//@Resourcepublic void setUserManager(UserManager userManager) {this.userManager = userManager;}@Overridepublic String execute() throws Exception {List<User> userList = userManager.listUsers();for(User user : userList){Map<String, Object> jsonMap = new HashMap<String, Object>();jsonMap.put("id", user.getId());jsonMap.put("username", user.getUsername());jsonMap.put("password", user.getPassword());users.add(jsonMap);}return SUCCESS;}}

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