上一篇文章：用户权限设计(一)

下面介绍一下权限的更新和验证

	@RequestMapping("authDemoSubmit")
	public String authDemoSubmit(@ModelAttribute("vm") UserAuth mUserAuth) {
		
		Map<String, List<String>> authMap = mUserAuth.getUserAuthMap();
		
		Iterator<Map.Entry<String, List<String>>> iterator = authMap.entrySet().iterator();
		while(iterator.hasNext( )) {
		    Map.Entry<String, List<String>> entry =iterator.next( );
		    String objId = entry.getKey( );// 获得对象id
		    String authOperate = list2string(entry.getValue());//获得操作权限
		    AuthAcc mAuthAcc = testService.getAuthAccByUserIdObjId("004", objId);//根据用户id和对象id获取权限表对象
		    if(mAuthAcc == null){
		    	// 如果权限为空,则插入一条数据
		    	mAuthAcc = new AuthAcc();
		    	mAuthAcc.setUserId("004");//用户id
		    	mAuthAcc.setObjId(objId);//对象id
		    	mAuthAcc.setAuthOperate(authOperate);//操作权限
		    	testService.saveAuthAcc(mAuthAcc);
		    }else{
		    	//如果权限不为空,则更新权限
		    	mAuthAcc.setAuthOperate(authOperate);//操作权限
		    	testService.updateAuthAcc(mAuthAcc);
		    }
		}
		
		return "redirect:authDemo.html";
	}

	private String list2string(List<String> lst){
		StringBuffer str = new StringBuffer();
		for(String s:lst){
			str = str.append(s);
		}
		return str.toString();
	}

	@RequestMapping("authDemoRequest")
	public String authDemoRequest() {
		
		String requestOperate = "u";//假设请求的操作是更新操作,这个参数可以从前台页面传入
		
		//在请求某个对象功能的时候可以如下进行权限验证
		AuthAcc mAuthAcc = testService.getAuthAccByUserIdObjId("004", "001");//根据用户id和对象id获取权限表对象
		
		if(mAuthAcc == null){
			//没有权限,返回前画面
			return "front";
		}else{
			String authOperate = mAuthAcc.getAuthOperate();//获取用户对应的权限
			if(authOperate.contains(requestOperate)){
				//如果包含权限,则跳转到下个画面
				return "next";
			}else{
				//没有权限,返回前画面
				return "front";
			}
		}
	}

用户权限设计(二)