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该问题已被官方收录

spring用@Autowired自动注入时idea老是报错？

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

任务7在接口上加了一级路径后，静态资源又无法拦截了

0

1

图片上传

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

配置文件加载错误

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

package com.baidu.util;

import org.apache.commons.dbcp.BasicDataSourceFactory;
import org.apache.commons.dbutils.QueryRunner;

import javax.sql.DataSource;
import java.io.FileInputStream;
import java.util.Properties;

/**
 * @author huangdongjiang
 * @date 2018/8/30 21:42
 */
public class MyDbUtil {
	public static QueryRunner getQueryRunner() {
        Properties properties = new Properties();
        QueryRunner queryRunner = null;
		try {
			FileInputStream is = new FileInputStream("db.properties");
			properties.load(is);
			DataSource dataSource = BasicDataSourceFactory.createDataSource(properties);

			queryRunner = new QueryRunner(dataSource);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return queryRunner;
	}
}

java.io.FileNotFoundException: db.properties (系统找不到指定的文件。)
	at java.io.FileInputStream.open0(Native Method)
	at java.io.FileInputStream.open(FileInputStream.java:195)
	at java.io.FileInputStream.<init>(FileInputStream.java:138)
	at java.io.FileInputStream.<init>(FileInputStream.java:93)
	at com.baidu.util.MyDbUtil.getQueryRunner(MyDbUtil.java:19)
	at com.baidu.dao.PrivilegeDao.addPrivilege(PrivilegeDao.java:26)
	at TestDao.testPrivilege(TestDao.java:16)
	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:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$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)

java.lang.NullPointerException
	at com.baidu.dao.PrivilegeDao.addPrivilege(PrivilegeDao.java:29)
	at TestDao.testPrivilege(TestDao.java:16)
	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:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$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

jsp页面展示效果兼容性问题如何避免？

0

1

JSP

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

spring boot启动错误

2

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

jsp页面不能加载图片，css样式，js等文件

0

1

tiles JSP

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

tiles框架配置出错，求指点

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

七月 27, 2014 10:02:15 下午 org.apache.catalina.core.ApplicationContext log
严重: StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tilesConfigurer' defined in ServletContext resource [/WEB-INF/spring-servlet.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: org/apache/tiles/startup/BasicTilesInitializer
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:997)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:943)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:67)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:990)
... 33 more
Caused by: java.lang.ClassNotFoundException: org.apache.tiles.startup.BasicTilesInitializer
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1711)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556)
... 46 more
七月 27, 2014 10:02:15 下午 org.apache.catalina.core.StandardContext loadOnStartup
严重: Servlet /SCADA threw load() exception
java.lang.ClassNotFoundException: org.apache.tiles.startup.BasicTilesInitializer
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1711)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2901)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1170)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556)
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2532)
at java.lang.Class.getConstructor0(Class.java:2842)
at java.lang.Class.getDeclaredConstructor(Class.java:2053)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:67)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:990)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:943)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133)
at javax.servlet.GenericServlet.init(GenericServlet.java:160)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5027)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5314)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1100)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1618)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

该问题已被官方收录

三层架构中使用策略模式，会使得三层架构中使用DAO层出现异常

1

第三方API调用

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

controller
	// 执行上传图片到阿里云
	@RequestMapping(value = "/uploadToAliYun", method = RequestMethod.POST)
	@ResponseBody
	public void userPhotoUploadToALiYun(@RequestParam("file") MultipartFile file, HttpServletRequest request,
										HttpServletResponse response) throws IOException {

		String result = null;
		// 使用策略模式
		UserPhotoUploadStrategyContext context = new UserPhotoUploadStrategyContext(new UserPhotoUploadToAliYunOSSImpl());
		context.executeUserPhotoUploadStrategy(request,response,file);

		// 上传文件
		// result = userPhotoUploadToAliYunOSS.userPhotoUploadToOSS(request, response, file);
		PrintWriter out = response.getWriter();
		out.print(result);
		out.flush();
		out.close();
		logger.info("上传阿里云返回结果：" + result );

	}


services:
public interface UserPhotoUploadStrategy {


	String userPhotoUploadToOSS(HttpServletRequest request, HttpServletResponse response,
								MultipartFile file) throws IOException;

}


实现类：

	/**
	 *
	 * @param request 请求信息
	 * @param response 响应信息
	 * @param file 文件输入流
	 * @return key 存在于OSS 的键值
	 * @throws IOException IO流异常
	 */
	@Override
	public String userPhotoUploadToOSS(HttpServletRequest request, HttpServletResponse response,
									   MultipartFile file) throws IOException {

		applicationContext.getBean("oSSUtilsByALiYun");

		String key = "";
		String result ="";

				// 获取上传前源文件名、文件大小
		String originalFileName = file.getOriginalFilename();
		Long originalFileSize  = file.getSize();
		logger.info("上传前的文件名：" + originalFileName);

		// 将 multipartfilein 转化为 inputstream流
		CommonsMultipartFile cFile = (CommonsMultipartFile) file;
		DiskFileItem fileItem = (DiskFileItem) cFile.getFileItem();
		InputStream inputStream = fileItem.getInputStream();

		if (!file.isEmpty()){
			OSSClient ossClient = task07.util.aliyun.oss.OSSUtilsByALiYun.getOSSClient();
			String newFileName = null;
			if (originalFileName.length()>0){
				newFileName = UUID.randomUUID() +"";
			}
			// 将文件上传并获得返回值 key(文件名称)
			key = OSSUtilsByALiYun.uploadObject2OSS(ossClient, inputStream,
					OSSUtilsByALiYun.getBucketName(), originalFileName,newFileName,
					originalFileSize,OSSUtilsByALiYun.getFolder());

		}
		//将文件名写入数据库
		if (!key.equals("")){
			HttpSession userNamesession =request.getSession();
			String userName = (String) userNamesession.getAttribute("userName");

			if (userName.equals(null)){
				logger.info("写入数据库出错，用户名为 null");

			}

			logger.info("userName:" + userName );
			logger.info("key:" + key );

			System.out.println(userLoginDao);
			System.out.println(userLoginDao.queryByName(userName).toString());
			userLoginDao.updateHeadPhoto(userName,key);

			UserLogin userLoginText = userLoginDao.queryByName(userName);
			String databaseHeadPho =  userLoginText.getHead_photo();
			logger.info("写入数据库的key 值为： " + databaseHeadPho);
			// 将 key 值写入数据库


			if (databaseHeadPho.equals(key)){
				logger.info("写入文件一致，上传成功！");
				result = "文件上传成功!";
			}else{
				result = "上传成功，写入数据库不一致!";
			}


		}else {
			logger.info("文件上传失败！");
			result = "文件上传失败!";
		}

		return result;
	}
}
 
策略模式的context :
public class UserPhotoUploadStrategyContext {


	private UserPhotoUploadStrategy userPhotoUploadStrategy;


	public UserPhotoUploadStrategyContext( UserPhotoUploadStrategy userPhotoUploadStrategy){
		this.userPhotoUploadStrategy = userPhotoUploadStrategy;
	}

	public String executeUserPhotoUploadStrategy(HttpServletRequest request, HttpServletResponse response,
												 MultipartFile file) throws IOException {
		System.out.println("context 之前");

		return userPhotoUploadStrategy.userPhotoUploadToOSS(request, response, file);
	}

}

该问题已被官方收录

阿里云图片无法迁移的到七牛云

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






七牛云上传流文件

public boolean streamUpload (InputStream inputStream,String filename) {
        logger.debug("进入 InputStream-----------------------");
        // ...生成上传凭证，然后准备上传
        Auth auth = Auth.create(accessKey,secretKey);
        String token = auth.uploadToken(bucketName);

        // 构造一个带指定Zone对象的配置类
        Zone zone = Zone.zone1();
        Configuration cfg = new Configuration(zone);
        // ...其他参数参考类注释
        UploadManager uploadManager = new UploadManager(cfg);
        logger.debug("开始上传。。。");
            try {
                Response response = uploadManager.put(inputStream, filename, token, null, null);
                logger.debug("上传结果：");
//                 解析上传成功的结果
                DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
                System.out.println(putRet.key);
                logger.debug("上传成功的结果: "+putRet);
                return true;
            } catch (QiniuException ex) {
                Response r = ex.response;
                System.err.println(r.toString());
                try {
                    System.err.println(r.bodyString());
                } catch (QiniuException ex2) {
                    // ignore
                }
            }
        return false;
    }

阿里云文件下载
 public InputStream updown(String fileName) {
//        String line = null;
//        OSSClient ossClient = initOSSClient();
//        // ossObject包含文件所在的存储空间名称、文件名称、文件元信息以及一个输入流。
//        try {
//            OSSObject ossObject = ossClient.getObject(bucketName, fileName);
//            InputStream objectContent = ossObject.getObjectContent();
//            // 数据读取完成后，获取的流必须关闭，否则会造成连接泄漏，导致请求无连接可用，程序无法正常工作。
//            objectContent.close();
//            // 关闭OSSClient。
//            ossClient.shutdown();
//            logger.debug("转换成功！");
//            return objectContent;
//        } catch (IOException e) {
//            e.printStackTrace();
//        }
//        return null;
//    }

该问题已被官方收录

JSP文件不能正常显示

2

1

JSP

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib tagdir="/WEB-INF/tags" prefix="yu" %>

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>无标题文档</title>
    <meta content="width=device-width, initial-scale=1.0" name="viewport" charset="UTF-8">
    <link rel="stylesheet" href="../../css/bootstrap.min.css">
    <script src="../../js/jquery.min.js"></script>
    <script src="../../js/bootstrap.min.js"></script>
    <link href="../../css/t11.css" rel="stylesheet" type="text/css">
    <link href="../../css/base.css" rel="stylesheet" type="text/css">
</head>

</div>

</header>