SpringBoot登录判断过程代码实例

SpringBoot登录判断过程代码实例

这篇文章主要介绍了SpringBoot登录判断代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

<div class="box">

用户名

密码

登录

忘记密码？

$(".button").click(function(e) {

$("button", this).addClass('active');

if ($(".button").hasClass("login")){

$.ajax({

url:"/cch/dologin",

type:"POST",

data:{

name:$("#name").serialize(),

pass:$("#pass").serialize(),

},

success:function (result) {

if(result.code==100){

window.location.href="/cch/main" rel="external nofollow" ;

}else {

alert(result.extendInfo.login_error);

}

}

})

}

})

//jsonMsg工具类

public class JsonMsg {

private int code;

private String msg;

private Map extendInfo = new HashMap();

public int getCode() {

return code;

}

public void setCode(int code) {

this.code = code;

}

public String getMsg() {

return msg;

}

public void setMsg(String msg) {

this.msg = msg;

}

public Map getExtendInfo() {

return extendInfo;

}

public void setExtendInfo(Map extendInfo) {

this.extendInfo = extendInfo;

}

public static JsonMsg success(){

JsonMsg res = new JsonMsg();

res.setCode(100);

res.setMsg("操作成功");

return res;

}

public static JsonMsg fail(){

JsonMsg res = new JsonMsg();

res.setCode(200);

res.setMsg("操作失败");

return res;

}

public JsonMsg addInfo(String key,Object object){

this.extendInfo.put(key,object);

return this;

}

}

/**

* controller

* 判断用户名和密码是否正确

*/

　　@RequestMapping(value = "/cch/dologin",method = RequestMethod.POST)

@ResponseBody

public JsonMsg dologin(HttpServletRequest request){

String username = request.getParameter("name");

String password = request.getParameter("pass");

System.out.prinOJdXzaSUXFtln(username+" "+password);

if (!"name=admin".equals(username) || !"pass=123".equals(password)){

return JsonMsg.fail().addInfo("login_error","用户名或密码错误");

}

request.getSession().setAttribute("islogin","true");//如果正确，则在seesion里添加判断属性，可供拦截器判断是否登录过

return JsonMsg.success();

}

//自定义拦截器

//如果未登录则跳回登录页

public class SysInterceptor extends HandlerInterceptorAdapter {

/**

* 进入拦截器后首先进入的方法

* 返回false则不再继续执行

* 返回true则继续执行

*/

@Override

public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

System.out.println("我是拦截器：我进来了");

HttpSession session = request.getSession();

String islogin = (String)session.getAttribute("islogin");

if(islogin==null){

System.out.println("用户没有登录");

response.sendRedirect("/cch/login");

return false;

}

System.out.println("用户已登录");

return true;

}

@Override

public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

}

@Override

public void afterCompletion(HttpServletRequest request, HttpServletResOJdXzaSUXFponse response, Object handler, Exception ex) throws Exception {

}

}

//把拦截器添加到springboot中

@Configuration

public class SessionConfig implements WebMvcConfigurer {

@Override

public void addInterceptors(InterceptorRegistry registry) {

//拦截有 "/cch" 前缀的路径，除了 "/cch/login","/cch/dologin"

registry.addInterceptor(new SysInterceptor()).excludePathPatterns("/cch/login","/cch/dologin").addPathPatterns("/cch/**");

}

}

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