SSH2不得不添加不能修改删除，求解

	<!--
		对事务管理器进行事务设置。增加如下代码： 这里创建了一个advice(通知)，对事务管理器进行事务设置，这里意思是指，
		对于以save、del、update开头的方法应用事务。
	-->
	<tx:advice id="smAdvice" transaction-manager="transactionManager">
		<!-- 设置事务传播属性 -->
		<tx:attributes>
			<tx:method name="find*" propagation="REQUIRED"  />
			<tx:method name="get*" propagation="REQUIRED" />
			<tx:method name="display*" propagation="REQUIRED" />
			<tx:method name="view*" propagation="REQUIRED" />
			
			<tx:method name="save*" propagation="REQUIRED" />
			<tx:method name="del*" propagation="REQUIRED" />
			<tx:method name="update*" propagation="REQUIRED" />
			<tx:method name="insert*" propagation="REQUIRED" />
			<tx:method name="edit*" propagation="REQUIRED" />
			<tx:method name="create*" propagation="REQUIRED" />
			<tx:method name="delete*" propagation="REQUIRED" />
		</tx:attributes>
	</tx:advice>
<tx:annotation-driven transaction-manager="transactionManager"/>
	<!-- 下面就把事务应用到具体的类  -->
	<aop:config>
		<!--
			<aop:pointcut id="smMethod" expression="execution(*
			cn.app.cost.buz.impl.*.*(..))"/>
		-->
		<aop:pointcut id="smMethod" expression="execution(* cn.*.buz.impl.*.*(..))" />
		<aop:advisor pointcut-ref="smMethod" advice-ref="smAdvice" />
	</aop:config>

package cn.action;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts2.ServletActionContext;
import org.hibernate.NonUniqueResultException;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import cn.model.Roomusage;
import cn.page.PageBean;
import cn.service.RoomusageService;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.opensymphony.xwork2.ActionContext;

@Controller

public class RoomusageManagerAction extends JqGridBaseAction<Roomusage> {
	@Resource
	RoomusageService roomusageService;
	private Integer r_u_id;
	private Roomusage roomusage;
	private Integer pageNo = 1;
	private PageBean pageBean;
	private Integer rowPerPage;
	private Integer totalCount;
	private String result;
	private String ajaxResult;

	public String getAjaxResult() {
		return ajaxResult;
	}

	public void setAjaxResult(String ajaxResult) {
		this.ajaxResult = ajaxResult;
	}

	public String getResult() {
		return result;
	}

	public void setResult(String result) {
		this.result = result;
	}

	public Integer getTotalCount() {
		return totalCount;
	}

	public void setTotalCount(Integer totalCount) {
		this.totalCount = totalCount;
	}

	public Integer getRowPerPage() {
		return rowPerPage;
	}

	public void setRowPerPage(Integer rowPerPage) {
		this.rowPerPage = rowPerPage;
	}

	public PageBean getPageBean() {
		return pageBean;
	}

	public void setPageBean(PageBean pageBean) {
		this.pageBean = pageBean;
	}

	public Integer getPageNo() {
		return pageNo;
	}

	public void setPageNo(Integer pageNo) {
		this.pageNo = pageNo;
	}

	public Integer getR_u_id() {
		return r_u_id;
	}

	public void setR_u_id(Integer r_u_id) {
		this.r_u_id = r_u_id;
	}

	public Roomusage getRoomusage() {
		return roomusage;
	}

	public void setRoomusage(Roomusage roomusage) {
		this.roomusage = roomusage;
	}

	public String execute() {
		return this.refreshGridModel();
	}

	public String viewRoomusage() {

		int id = roomusage.getR_u_id();

		roomusage = roomusageService.get(roomusage.getR_u_id());

		if (roomusage == null) {
			ajaxResult = "未能找到ID为 " + id + " 的联系人";
			return ERROR;
		}

		ajaxResult = SUCCESS;
		return SUCCESS;
	}
	 public String createRoomusage() {  
	        try {  
	        	System.out.print(roomusage.getR_u_name()+roomusage.getR_u_id());
	        	this.roomusageService.save(roomusage);