菜鸟问题:在JAVA后台ACTION中输出JS对话框这哪里错了呢？？
我的ACTION方法是这样，当执行插入的时候页面就变的一片空白了也不跳转，
我这句<script language= 'javascript '> alert('删除成功!'); location.href=login.jsp</script> 哪里错了吗，怎么改呢？？？？
public ActionForward insertDept(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
DeptForm deptForm = (DeptForm) form;
DeptVO deptVO = new DeptVO();
deptVO.setDepartmentCode(deptForm.getDepartmentCode());
deptVO.setDepartmentID(deptForm.getDepartmentID());
deptVO.setDepartmentName(deptForm.getDepartmentName());
try {
deptDao.insertDept(deptVO);
} catch (Exception e) {
e.printStackTrace();
}
try {
PrintWriter out = response.getWriter();
out.println( " <script language= 'javascript '> alert('删除成功!'); location.href=login.jsp</script> ");
out.close();
} catch (IOException e) {
e.printStackTrace();
}
request.getSession().setAttribute("Record", "N");
return queryDept(mapping,form,request,response);
}
[解决办法]
你把
return改成return null;
public class LoginAction extends Action {
public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
String user = null;
// Default target to success
String target = new String("success");
// Use the LoginForm to get the request parameters
String username = ((LoginForm)form).getUsername();
String password = ((LoginForm)form).getPassword();
// Set the target to failure
if ( user == null ) {
((LoginForm)form).setUsername("username");
((LoginForm)form).setPassword("password");
target = new String("failure");
}
else {
request.setAttribute("USER", user);
}
PrintWriter out = response.getWriter();
out.write("<script language="javascript">alert("hello test"); location.href="testhello.jsp";</script>");
// Forward to the appropriate View
return null;
}
}
用action这个代码我也测了没问题。
你的js最终是要到页面的。所以js在哪里测都行的。
