Struts2+spring+hibernate框架

package com.ssh.action; import java.io.IOException; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport; import com.opensymphony.xwork2.ModelDriven; import com.ssh.pojo.PageBean; import com.ssh.pojo.Student; import com.ssh.service.StudentService; import com.ssh.util.JsonUtil; /* * 学生管理的action的类 */ public class StudentAction extends ActionSupport implements ModelDriven<Student>{ /** * Java序列号机制是通过在运行时判断类的serialVersionUID来验证版本一致性的 */ private static final long serialVersionUID = 1L; private Student student = new Student(); public Student getModel() { // TODO Auto-generated method stub return student; } private Integer currPage = 1; public void setCurrPage(Integer currPage) { this.currPage = currPage; } private StudentService studentService; public void setStudentService(StudentService studentService) { this.studentService = studentService; } //提供查询的方法 public String findAll(){ PageBean<Student> pageBean = studentService.findByPage(currPage); //将pageBean存入值栈中 ActionContext.getContext().getValueStack().push(pageBean); return "findAll"; } /* * 提交转添加页面 */ public String saveUI(){ return "saveUI"; } /* * 添加学生 */ public String save(){ studentService.save(student); return "saveSuccess"; } /* * 跳转学生修改页 */ public String edit(){ student = studentService.findById(student.getId()); return "editSuccess"; } public String update(){ studentService.update(student); return "updateSuccess"; } /* * 删除 */ public String delete(){ student = studentService.findById(student.getId()); if (student != null) { studentService.detete(student); } return "deleteSuccess"; } /* * json实现异步通信 */ public void returnJson() throws IOException{ Map<String, Object> map = new HashMap<String, Object>(); map.put("name", "xuwei"); map.put("age", 18); map.put("sex", "男"); PageBean<Student> pageBean = studentService.findByPage(currPage); map.put("currPage", pageBean.getCurrPage()); map.put("pageSize", pageBean.getPageSize()); List<Object> slist = new ArrayList<Object>(); List<Student> list= (List<Student>) pageBean.getList(); for (int i = 0; i < list.size(); i++) { student = list.get(i); Map<String, Object> map1 = new HashMap<String, Object>(); map1.put("n", student.getName()); map1.put("a", student.getAge()); map1.put("s", student.getSex()); slist.add(map1); } //不能接受list集合，需要把list改变为字符串格式 String jsonlist = slist.toString(); map.put("list", jsonlist); //调用实现异步通信的方法 JsonUtil.Json(ServletActionContext.getResponse(),map); } }