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该问题已被官方收录

Nginx无法启动

0

1

linux命令 Nginx

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

公司框架生成代码时报数组越界

1

代码生成

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

多模块打包

0

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

可以为null的字段但是在jsp上必须要填入所有参数

0

1

JSP

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

<form action="${pageContext.request.contextPath}/regist" class="form-horizontal" role="form" method="post">
    <div class="form-group">
        <label for="username" class="col-sm-2 control-label">*username</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="username" name="username"
                    placeholder="用户名：8-16位英文数字">
        </div>
    </div>
    <div class="form-group">
        <label for="password" class="col-sm-2 control-label">*password</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="password" name="password"
                    placeholder="输入密码">
        </div>
    </div>
    <div class="form-group">
        <label for="email" class="col-sm-2 control-label">*email</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="email" name="email"
                     placeholder="输入邮箱">
        </div>
    </div>
    <div class="form-group">
        <label for="name" class="col-sm-2 control-label">*name</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="name" name="name"
                    placeholder="输入姓名">
        </div>
    </div>
    <%--<div class="form-group">--%>
        <%--<label for="sex" class="col-sm-2 control-label">sex</label>--%>
        <%--<div class="col-sm-2">--%>
            <%--<input type="text" class="form-control" id="sex" name="sex"--%>
                   <%--VALUE="" placeholder="输入性别">--%>
        <%--</div>--%>
    <%--</div>--%>
    <div class="form-group">
        <label for="introduce" class="col-sm-2 control-label">*introduce</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="introduce" name="introduce"
                    placeholder="输入个人介绍">
        </div>
    </div>
    <div class="form-group">
        <label for="status" class="col-sm-2 control-label">*status</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="status" name="status"
                    placeholder="输入在学状态">
        </div>
    </div>
    <div class="form-group">
        <label for="major" class="col-sm-2 control-label">major</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="major" name="major"
                   placeholder="输入主修">
        </div>
    </div>
    <div class="form-group">
        <label for="classes" class="col-sm-2 control-label">classes</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="classes" name="classes"
                    placeholder="输入课程">
    </div>
    </div>
    <div class="form-group">
        <label for="QQ" class="col-sm-2 control-label">QQ</label>
        <div class="col-sm-2">
            <input type="text" class="form-control" id="QQ" name="QQ"
                    placeholder="输入QQ">
        </div>
    </div>
    <div>
    <input type="submit" name="提交">
    </div>
</form>



@RequestMapping(value = "/regist", method = RequestMethod.POST)
    public ModelAndView regist(User user) {
        System.out.println("注册");
        ModelAndView mav = new ModelAndView();
        String prompt;
        String str = user.getUsername();
        String pas = user.getPassword();
        User user1 = new User();
        //正则匹配
        boolean confirmU = Verification.regexUsername(str);
        boolean confirmP = Verification.regexPassword(pas);
        if (confirmU) {
            try {
                user1 = userService.findByUsername(str);
            } catch (Exception e) {
                e.printStackTrace();
            }
            if (user1 == null) {
        //表示通用唯一标识符(UUID)的类。UUID表示一个128位的值
        UUID uuid = UUID.randomUUID();
        String salt = uuid.toString().substring(10);
                System.out.println("salt"+salt);
        //进行SHA加密
        pas = SHA.getResult(pas);

        user.setSalt(salt);
        //进行salt加密
        pas = SHA.getSHAwithSalt(pas,salt);
        //存入加密后的密码
        user.setPassword(pas);
                System.out.println("密码"+pas);
                userService.regist(user);
                //注册成功后跳转index.jsp页面
                prompt = "注册成功";
            } else {
                prompt = "注册失败,用户名已存在";
                logger.info("注册失败,用户名已存在");
            }
        } else {
            prompt = "注册失败,账号格式不对";
            logger.info("账号格式不对");
        }
        mav.addObject("prompt", prompt);
        mav.setViewName("prompt");
        return mav;
    }

该问题已被官方收录

REST接口除了get外，显示405错误

0

1

SSM

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

@Controller
@RequestMapping
public class RestCrud {

    @RequestMapping(value="/postTest",method= RequestMethod.POST)
    public String insert(){
        System.out.println("insert");
        return "success";
    }

    @RequestMapping(value="/deleteTest/{id}",method=RequestMethod.DELETE)
    public String delete(@PathVariable Integer id){
        System.out.println("DELETE"+id);
        return "success";
    }

    @RequestMapping(value="/updateTest/{id}",method=RequestMethod.PUT)
    public String update(@PathVariable Integer id){
        System.out.println("UPDATE"+id);
        return "success";
    }

    @RequestMapping(value="/getTest/{id}")
    public String get(@PathVariable Integer id){
        System.out.println("GET"+id);
        return "success";
    }

    @RequestMapping(value="",method=RequestMethod.GET)
    public String index(){
        return "success";
    }


}
jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Insert title here</title>
</head>
<body>
success！！

<!-- Rest CRUD -->
<form action="postTest/" method="post">
    <input type="submit" value="post"/>
</form>

<form action="deleteTest/1/" method="post">
    <input type="hidden" name="_method" value="DELETE"/>
    <input type="submit" value="delete"/>
</form>

<form action="updateTest/1/" method="post">
    <input type="hidden" name="_method" value="PUT"></input>
    <input type="submit" value="update"></input>
</form>

<a href="getTest/1">get</a>
</body>
</html>

该问题已被官方收录

Navicat中导出数据库没有字段名

2

1

数据库

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

图片迁移异常

0

1

图片上传

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

public void transferUpload(String fileName,InputStream inputStream) {

        //请求上传凭证
        Auth auth = Auth.create(accessKey, secretKey);
        String upToken = auth.uploadToken(bucket);
        try {

            Response response = uploadManager.put(inputStream, fileName, upToken,null,null);
            DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
            System.out.println(putRet.key);
            System.out.println(putRet.hash);
        } catch (QiniuException ex) {
            Response r = ex.response;
            System.err.println(r.toString());
            try {
                System.err.println(r.bodyString());
            } catch (QiniuException ex2) {
            }
        }
    }
public void transferUpload(InputStream inputStream,String fileName){
        ObjectMetadata objectMetadata = new ObjectMetadata();
        objectMetadata.setContentLength(1);
        cosClient.putObject(bucketName,fileName,inputStream,objectMetadata);
    }

com.qcloud.cos.exception.CosClientException: More data read than expected: dataLength=8192; expectedLength=1; includeSkipped=false; in.getClass()=class com.qcloud.cos.internal.ReleasableInputStream; markedSupported=false; marked=0; resetSinceLastMarked=false; markCount=0; resetCount=0

at com.qcloud.cos.internal.LengthCheckInputStream.checkLength(LengthCheckInputStream.java:117)
	at com.qcloud.cos.internal.LengthCheckInputStream.read(LengthCheckInputStream.java:76)
	at com.qcloud.cos.internal.SdkFilterInputStream.read(SdkFilterInputStream.java:47)
	at com.qcloud.cos.internal.MD5DigestCalculatingInputStream.read(MD5DigestCalculatingInputStream.java:82)
	at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
	at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
	at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
	at com.qcloud.cos.internal.SdkBufferedInputStream.read(SdkBufferedInputStream.java:46)
	at com.qcloud.cos.internal.SdkFilterInputStream.read(SdkFilterInputStream.java:47)
	at com.qcloud.cos.internal.SdkFilterInputStream.read(SdkFilterInputStream.java:47)
	at com.qcloud.cos.event.ProgressInputStream.read(ProgressInputStream.java:145)
	at org.apache.http.entity.InputStreamEntity.writeTo(InputStreamEntity.java:140)
	at org.apache.http.impl.execchain.RequestEntityProxy.writeTo(RequestEntityProxy.java:121)
	at org.apache.http.impl.DefaultBHttpClientConnection.sendRequestEntity(DefaultBHttpClientConnection.java:156)
	at org.apache.http.impl.conn.CPoolProxy.sendRequestEntity(CPoolProxy.java:160)
	at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:238)
	at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123)
	at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272)
	at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)
	at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
	at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:111)
	at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
	at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
	at com.qcloud.cos.http.DefaultCosHttpClient.exeute(DefaultCosHttpClient.java:365)
	at com.qcloud.cos.COSClient.invoke(COSClient.java:500)
	at com.qcloud.cos.COSClient.putObject(COSClient.java:816)
	at com.qcloud.cos.COSClient.putObject(COSClient.java:871)
	at jnshu.api.tencentCloud.Storage.transferUpload(Storage.java:72)
	at jnshu.api.qiNiuCloud.Storage.test(Storage.java:184)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Process finished with exit code -1

该问题已被官方收录

如何将logger.info()输出的信息输出到txt文件中

0

1

log4j

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

获取接口后调用出现空指针异常

0

1

JDBC

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

2018-11-23 09:57:12.836  INFO 1436 --- [           main] c.j.s.ProjectStarter                     : Starting ProjectStarter on MS01 with PID 1436 (H:\Java\Code\ideaCode\FristSpringBoot\target\classes started by user in H:\Java\Code\ideaCode\FristSpringBoot)
2018-11-23 09:57:12.854  INFO 1436 --- [           main] c.j.s.ProjectStarter                     : No active profile set, falling back to default profiles: default
2018-11-23 09:57:13.819  INFO 1436 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2018-11-23 09:57:13.822  INFO 1436 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
2018-11-23 09:57:13.847  INFO 1436 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 15ms. Found 0 repository interfaces.
2018-11-23 09:57:14.357  INFO 1436 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$54631726] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-11-23 09:57:14.815  INFO 1436 --- [           main] o.s.b.w.e.t.TomcatWebServer              : Tomcat initialized with port(s): 8080 (http)
2018-11-23 09:57:14.837  INFO 1436 --- [           main] o.a.c.c.StandardService                  : Starting service [Tomcat]
2018-11-23 09:57:14.837  INFO 1436 --- [           main] o.a.c.c.StandardEngine                   : Starting Servlet Engine: Apache Tomcat/9.0.13
2018-11-23 09:57:14.843  INFO 1436 --- [           main] o.a.c.c.AprLifecycleListener             : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [C:\Program Files\Java\jdk-10.0.2\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;F:\oracle\product\10.2.0\db_1\bin;C:\ProgramData\Oracle\Java\javapath;C:\Program Files\Intel\iCLS Client\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Java\jdk1.8.0_151\\bin;% ANDROID_SDK_HOME%\platform-tools;% ANDROID_SDK_HOME%\tools;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;H:\Java\tool\apache-maven-3.5.4\bin;C:\Program Files (x86)\MySQL\MySQL Server 5.7\bin;C:\Tools\putty\;C:\Tools\WinSCP\;C:\Tools\SVN\bin;C:\Tools\jetty-distribution-9.4.11.v20180605\bin;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Tools\Git\cmd;H:\Java\tool\spring-2.1.0.RELEASE\bin;C:\Users\user\AppData\Local\Microsoft\WindowsApps;C:\Users\user\AppData\Local\GitHubDesktop\bin;%USERPROFILE%\AppData\Local\Microsoft\WindowsApps;;.]
2018-11-23 09:57:14.958  INFO 1436 --- [           main] o.a.c.c.C.[.[.[/h]                       : Initializing Spring embedded WebApplicationContext
2018-11-23 09:57:14.958  INFO 1436 --- [           main] o.s.w.c.ContextLoader                    : Root WebApplicationContext: initialization completed in 1982 ms
2018-11-23 09:57:14.958  INFO 1436 --- [           main] w.s.c.ServletWebServerApplicationContext : Restoring user defined scope request
2018-11-23 09:57:14.959  INFO 1436 --- [           main] w.s.c.ServletWebServerApplicationContext : Restoring user defined scope session
2018-11-23 09:57:15.020  INFO 1436 --- [           main] f.a.AutowiredAnnotationBeanPostProcessor : Autowired annotation is not supported on static fields: static com.jnshu.springbootsecurity.service.AccountService com.jnshu.springbootsecurity.ProjectStarter.accountService
2018-11-23 09:57:15.020  INFO 1436 --- [           main] f.a.AutowiredAnnotationBeanPostProcessor : Autowired annotation is not supported on static fields: static com.jnshu.springbootsecurity.service.StudentInfoService com.jnshu.springbootsecurity.ProjectStarter.studentInfoService
2018-11-23 09:57:15.020  INFO 1436 --- [           main] f.a.AutowiredAnnotationBeanPostProcessor : Autowired annotation is not supported on static fields: static com.jnshu.springbootsecurity.service.StudentService com.jnshu.springbootsecurity.ProjectStarter.studentService
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.ibatis.reflection.Reflector (file:/H:/Java/maven_repos/org/mybatis/mybatis/3.4.4/mybatis-3.4.4.jar) to method java.lang.Object.finalize()
WARNING: Please consider reporting this to the maintainers of org.apache.ibatis.reflection.Reflector
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
2018-11-23 09:57:15.506  INFO 1436 --- [           main] o.s.s.c.ThreadPoolTaskExecutor           : Initializing ExecutorService 'applicationTaskExecutor'
2018-11-23 09:57:15.991  INFO 1436 --- [           main] o.s.s.w.DefaultSecurityFilterChain       : Creating filter chain: any request, [org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter@31006a75, org.springframework.security.web.context.SecurityContextPersistenceFilter@491893f8, org.springframework.security.web.header.HeaderWriterFilter@20c3b34b, org.springframework.security.web.csrf.CsrfFilter@708769b7, org.springframework.security.web.authentication.logout.LogoutFilter@77c692b4, org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter@531a716c, org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter@4cc7e3ad, org.springframework.security.web.authentication.ui.DefaultLogoutPageGeneratingFilter@49122853, org.springframework.security.web.authentication.www.BasicAuthenticationFilter@7019d619, org.springframework.security.web.savedrequest.RequestCacheAwareFilter@46e388ec, org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter@3d235635, org.springframework.security.web.authentication.AnonymousAuthenticationFilter@e97f115, org.springframework.security.web.session.SessionManagementFilter@58e02359, org.springframework.security.web.access.ExceptionTranslationFilter@6ed51944, org.springframework.security.web.access.intercept.FilterSecurityInterceptor@55638165]
2018-11-23 09:57:16.079  INFO 1436 --- [           main] o.s.b.w.e.t.TomcatWebServer              : Tomcat started on port(s): 8080 (http) with context path '/h'
2018-11-23 09:57:16.082  INFO 1436 --- [           main] c.j.s.ProjectStarter                     : Started ProjectStarter in 4.159 seconds (JVM running for 5.71)
111111111111
java.lang.NullPointerException
	at com.jnshu.springbootsecurity.ProjectStarter.main(ProjectStarter.java:51)

该问题已被官方收录

Springcloud运行后报错，找不到服务

0

1

springcloud

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

import com.example.serviceweb.model.ExcellentStudent;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.util.List;
@FeignClient(name= "server-sql")
public interface ESService  {
    /*
     * 从Eureka获取注册服务列表，从而能够消费服务*/
    @RequestMapping(value = "/ES/getById")
    ExcellentStudent getById(@RequestParam("id") Integer id) ;
    @RequestMapping(value = "/ES/listAll")
    List<ExcellentStudent> listAll();
}