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  • Caused by: java.sql.SQLException: Field 'userID' doesn't have a default value 字段需要设置一个默认值

    一、新增记录出现异常

    1.问题的出现,我在新增一个用户信息时,报的错误,不能添加记录到数据库;

     

    2.详细异常信息

    Hibernate: insert into t_user (uname, userAddress, userBirth, userEmail, userGender, userName, userPassword, userPhone) values (?, ?, ?, ?, ?, ?, ?, ?)
    org.springframework.jdbc.UncategorizedSQLException: Hibernate operation: could not insert: [biz.entity.main.User]; uncategorized SQLException for SQL [insert into t_user (uname, userAddress, userBirth, userEmail, userGender, userName, userPassword, userPhone) values (?, ?, ?, ?, ?, ?, ?, ?)]; SQL state [HY000]; error code [1364]; Field 'userID' doesn't have a default value; nested exception is java.sql.SQLException: Field 'userID' doesn't have a default value
    	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
    	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
    	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
    	at org.springframework.orm.hibernate3.HibernateAccessor.convertJdbcAccessException(HibernateAccessor.java:424)
    	at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:410)
    	at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:411)
    	at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
    	at org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:683)
    	at common.dao.hibernate.BaseHibernateDao.save(BaseHibernateDao.java:57)
    	at biz.web.service.impl.BizService.addSimpleUser(BizService.java:44)
    	at biz.web.action.sys.SimpleUserAction.add(SimpleUserAction.java:80)
    	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    	at java.lang.reflect.Method.invoke(Method.java:606)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:446)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:285)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
    	at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
    	at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
    	at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
    	at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:238)
    	at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:238)
    	at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:325)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
    	at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
    	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
    	at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
    	at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:544)
    	at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
    	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    	at common.filter.SessionFilter.doFilter(SessionFilter.java:69)
    	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
    	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
    	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
    	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
    	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    	at java.lang.Thread.run(Thread.java:744)
    Caused by: java.sql.SQLException: Field 'userID' doesn't have a default value
    	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1074)
    	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4074)
    	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4006)
    	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2468)
    	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2629)
    	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2719)
    	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155)
    	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2450)
    	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2371)
    	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2355)
    	at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewProxyPreparedStatement.java:139)
    	at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:93)
    	at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:56)
    	at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2346)
    	at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2853)
    	at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:71)
    	at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
    	at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:320)
    	at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:203)
    	at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:129)
    	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)
    	at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56)
    	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)
    	at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50)
    	at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
    	at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:713)
    	at org.hibernate.impl.SessionImpl.save(SessionImpl.java:701)
    	at org.hibernate.impl.SessionImpl.save(SessionImpl.java:697)
    	at org.springframework.orm.hibernate3.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:686)
    	at org.springframework.orm.hibernate3.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:1)
    	at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406)
    	... 73 more

    二、异常信息分析

    1.insert语句执行失败

        异常显示就是insert插入sql语句执行错误导致添加记录到数据库失败;

        根本原因就是Field 'userID' doesn't have a default value;

        字段userID没有设置默认值;

        下面该表的create语句中确实没有给userID设置默认值;

    CREATE TABLE `t_user` (
      `userID` int(11) NOT NULL,
      `uname` varchar(20) default NULL,
      `userAddress` varchar(100) default NULL,
      `userBirth` varchar(10) default NULL,
      `userEmail` varchar(50) default NULL,
      `userGender` int(11) default NULL,
      `userName` varchar(20) default NULL,
      `userPassword` varchar(150) default NULL,
      `userPhone` varchar(255) default NULL,
      PRIMARY KEY  (`userID`)
    );

        导致insert语句对应的userID字段没有插入数据,而该字段不允许为null导致的;

    Hibernate: insert into t_user (uname, userAddress, userBirth, userEmail, userGender, userName, userPassword, userPhone) values (?, ?, ?, ?, ?, ?, ?, ?)

    三、解决异常

    3-1.给字段设置默认值

        这种问题简单的解决办法就是设置默认值,但是当前字段userID是主键不能设置默认值;

    `userAddress` varchar(100) default '阿拉加斯加'

    3-2.Hibernate配置检查

        那可能是Hibernate配置出现了问题;然后找到当前表对应的Entity实体类

        字段userID的配置

    	@Id
    	@GeneratedValue(strategy = IDENTITY)
    	@Column(name = "userID", unique = true, nullable = false)
    	public Integer getUserId() {
    		return this.userId;
    	}

        该字段设置了自增策略,指定不可为空,且是唯一的;
        感觉没啥问题;再次测试新增一条记录还是失败;

    3-3.数据库中表t_user的修改

        然后就从数据表这里入手;

        将当t_user的userID修改为自增

    alter table t_user modify userID int auto_increment;

        因为该字段有外键约束不允许修改;

        索性就把表删了;新建表t_user;直接在设置字段自增且不为空;然后新增一条记录成功了;

    CREATE TABLE `t_user` (
      `userID` int(11) NOT NULL auto_increment,
      `uname` varchar(20) default NULL,
      `userAddress` varchar(100) default NULL,
      `userBirth` varchar(10) default NULL,
      `userEmail` varchar(50) default NULL,
      `userGender` int(11) default NULL,
      `userName` varchar(20) default NULL,
      `userPassword` varchar(150) default NULL,
      `userPhone` varchar(255) default NULL,
      PRIMARY KEY  (`userID`)
    );

     

    四、其他解决方法

    1.修改mysql配置。打开my.ini,查找sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"修改为sql-mode="NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"然后重启MYSQL

    2.设置默认值即可,当然这个字段不是主键的情况下;

    3.MySQL 5 uses a strict mode which needs to be disabled. In Windows, Goto Start-->Programs-->MySQL->MySQL Instance Config Wizard. Follow through the Reconfigure Instance option-->Detailed Configuration-->Continue Next a few screens. At the bottom under Enable TCP/IP option there is 'Enable Strict Mode'. Deslect this option (no tick). Save changes and MySQL will restart.
     

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    展开全文
  • 如何获取支付宝UserId

    千次阅读 2020-04-27 15:56:42
    如何获取支付宝UserId 1、登录支付宝网页版 进入支付宝官网alipay.com,扫码登录或者账号密码登录 登陆成功后自动跳转到个人首页: 2、获取UserId 在主页页面上鼠标右击或者CTRL+U查看网页源码,在源码...

                                     如何获取支付宝UserId

    1、登录支付宝网页版

          进入支付宝官网alipay.com,扫码登录或者账号密码登录

    登陆成功后自动跳转到个人首页:

    2、获取UserId

       在主页页面上鼠标右击或者CTRL+U查看网页源码,在源码页面CTRL+F 查找:userId,结果如下图:

    展开全文
  • 调微信支付时中需要将userid转换成openid 阅读文档(https://work.weixin.qq.com/api/doc#90000/90135/90202)后开始调用, 结果接口返回: {"errcode":40003,"errmsg":"invalid userid, hint: [1563539598_4_6ae...

    调微信支付时中需要将userid转换成openid

    阅读文档(https://work.weixin.qq.com/api/doc#90000/90135/90202)后开始调用,

    结果接口返回:

    {"errcode":40003,"errmsg":"invalid userid, hint: [1563539598_4_6ae561db56e26aba05e01ee837ef724c], from ip: 116.52.237.66, more info at https://open.work.weixin.qq.com/devtool/query?e=40003"}

    检查入参和POST方式均没有问题,网上搜索有人通过接口调试工具是可以正常返回openid的

    https://segmentfault.com/q/1010000014811463/a-1020000014850318

    https://blog.csdn.net/a545132569/article/details/89512913

    于是按照博客中的方式,也去腾讯提供的调试页面测试https://work.weixin.qq.com/api/devtools/devtool.php

    发现可以正常获取openid

    博客里的哥们说自己通过chrome发现腾讯提供的调试页面请求的地址和文档中的地址不一样,他在自己的代码中把请求地址改成和调试页面中一样的地址就ok了,但是我照做了还是不行。于是就开始用postman模拟请求,后来发现post中body选项下选form-data,得到的响应和我代码调用时获取的一样,都是题目中的errcode:40003,errmsg:invalid userid,但是body选项下选raw的时候就可以正常获取openid了。

     

    这下就真相大白了,我代码里用httpclient发起的post的请求时和postman里选form-data的时候是一样的,弄清了这两种方式的区别,为httpclient发起请求增加了raw这种形式的调用,问题解决。

    httpclient调用参考博客:https://www.cnblogs.com/zhangfei/p/5099036.html

    展开全文
  • JAVA:通过session 获取userid

    万次阅读 2018-10-15 17:58:41
    controller获取userid HttpSession session = request.getSession(); I nteger userId = (Integer)session.getAttribute("userId");

    controller获取userid

    HttpSession session = request.getSession(); I
    nteger userId = (Integer)session.getAttribute("userId");
    
    展开全文
  • Android中userId的作用

    千次阅读 2018-05-14 22:12:30
    每个应用在安装成功后,系统都会为其分配一个用户Id(userId),一个应用对应一个userId,而一个userId可以对应多个应用。当多个应用的userId相同时,可以访问对方的私有目录,如/data/data/包名下的文件,下面以...
  • 当APK安装的时候,userid这个标志就会产生。APK在设备上的整个生命周期中,这个ID不再改变。不同设备上同一个应用包可能有不同的userid,重要的是在给定的设备上,每个应用包有自己独立的useriduserid的特点: ...
  • session中存user话,存放信息多,会导致程序运行缓慢 session中存userid,每次获取用户的信息还要通过id查询,增加数据库读写,可能也会是程序慢下来 一般大家用哪种呢?
  • 手机号获取userid 通过手机号获取对应的userid 请求方式:POST(https) 请求地址:https://qyapi.weixin.qq.com/cgi-bin/user/getuserid?access_token=ACCESS_TOKEN 请求数据: { "mobile": "13430388888" } 参数...
  • 加密:lua实现 (lua有的版本没有位运算, lua位运算详细可以推荐这个帖子Lua位运算环境) ...funcation GetEncodeUserID(userId) local enCodeUserId = userId + 999999; enCodeUserId = bit.bxor(43690, enCodeUs...
  • 微信企业号之userid与openid互转

    千次阅读 2018-12-05 08:49:43
    该接口使用场景为微信支付、微信红包和企业转账,企业号用户在使用微信支付的功能时,需要自行将企业号的userid转成openid。在使用微信红包功能时,需要将应用id和userid转成appid和openid才能使用。 二.userid转换...
  • useGeneratedKeys="true" keyProperty="userId" 目的是将一个对象保存成功后,将插入的这条主键id返回,并保存到对象中,供后续使用 <insert id="save" parameterType=...
  • java HttpURLConnection 中用 userid转openid

    千次阅读 2016-07-13 16:53:46
    java中用HttpURLConnection方法把userid转openid 具体可看api http://qydev.weixin.qq.com/wiki/index.php?title=Userid与openid互换接口 不过 需要使用post提交 那么post的参数根据api来 { "userid": ...
  • Android Uid,UserId,AppId,Pid

    2019-12-16 09:34:00
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  • String sql = "SELECTuserid,nameFROMtuserWHEREuserid=? AND password=?" ;...pstmt.setString(1,userid) ; // 这里设置了第一个?的值 pstmt.setString(2,password) ; // 这里设置了第二个?的...
  • 根据微博用户名搜索爬取该用户userId并返回 import urllib.request from urllib import parse from bs4 import BeautifulSoup # 微博根据用户名查找userId # userName 用户名 # pageNum 查询页数,每页20个...
  • db2 userid 为空

    千次阅读 2013-06-17 20:38:15
    如果配置好数据源,在保证一切都对的情况下,却无法连接,报userid为空,请从启nodeagent
  • 淘宝旺旺号转userid 或 uid 接口与方法 更新时间:2020-1-3 13:27:15 如今越来越多的应用场景需要通过userid来实现,也可以叫uid,实际上就是把旺旺号转成用户的真实数字ID,因为在实际应用中 很多地方都要用到的不...
  • 淘宝旺旺号用户名称转userid 或 uid 接口与方法最近更新时间:2020-01-02 最近更新时间:2020-01-02 如今越来越多的应用场景需要通过userid来实现,也可以叫uid,实际上就是把旺旺号转成用户的真实数字ID,因为在...
  • C# 根据UserId生成可逆的唯一邀请码

    千次阅读 2019-01-15 17:48:45
    static void Main(string[] args) { int userId = 100001;//用户id string code = Encode(userId); string decode = Decode(code); Console.Write...
  • getAttribute (“userid”); B.session. setAttribute (“userid”); C.request. getParameter (“userid”); D.request. getAttribute (“userid”); 解答:A 转载于:...
  • 问题:在spring boot中使用jpa进行条件查询,报错:Unknown column 'userId' in 'where clause' 查询语句: /** *@Author: ZongMao on 2020/3/4 14:56 *通过userId查询符合的所有数据 *@return */ @...
  • <input type="text" placeholder="Username" id="userid" name="userid" autofocus /> 登录 var eg = {}; eg.$ = function(id){ return document.getElementById(id); }; eg.regCheck = ...
  • vue+axios登录时获取token和userId

    千次阅读 2018-11-05 18:17:39
    1.登录成功后,存储后台返回的token值和userId PS:把username和password,post请求发送到后台,若username和password正确,后台返回token和userId。若本地存储有token,localStorage.getItem(‘token’),则路由...
  • 查询表中数据条数 mysql> select count(*) from point; +----------+ | count(*) | +----------+ ... select t.userid, t.point from point t where addtime = (select max(addtime) from point tmp wher
  • userid userid_domain userid_expires userid_mark userid_name userid_p3p userid_path userid_service 内嵌变量 ngx_http_userid_module 模块设置方便客户端识别的 cookie。可以使用内嵌变量 KaTeX parse error...
  • 前者String &userid是传址操作,可以改变usrid的值,后者是传值操作,不可以改变传入的值。 前面一个是传引用作参数,参数值会在函数内部被改变(跟传指针差不多,效率高),第二个值不会被改变 如果仅仅是...
  • String sql="insert into userInfo(NAME,EMPCODE,DEPTCODE,SEX,TEL,... check the manual that corresponds to your MySQL server version for the right syntax to use near 'where userId=1434594273200' at line 1
  • public static String getWHead(String appid, String appsecret, String userId) { String requestUrl = user_info_url.replace("ACCESS_TOKEN", getAccessToken(appid, appsecret, 1).getToken()).repl...
  • 这是拦截器: 获得token,解析为claims,如果claims.get(...继续执行,报错userid canoot be null 通过打印,userid确实是null。 ![图片说明](https://img-ask.csdn.net/upload/201901/11/1547213083_17004.png)
  • 首先,前台用的XUtils框架POST方式传参。后台使用C#编写接口。...是从页面的QueryString,Form,Cookies,ServerVariables里面检索名为"UserID"的值。 优先级顺序为:QueryString->Form->Cookies->ServerVariables c

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