小编spr*_*101的帖子

我收到此错误(不是那么频繁):

2013-05-08 16:44:35,786  WARN (JDBCExceptionReporter.java:100) [org.hibernate.util.JDBCExceptionReporter, logExceptions] - SQL Error: 0, SQLState: 08S01
2013-05-08 16:44:35,786 ERROR (JDBCExceptionReporter.java:101) [org.hibernate.util.JDBCExceptionReporter, logExceptions] - Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
2013-05-08 16:44:35,833 ERROR (AdminDaoImpl.java:297) [com.myapp.admin.db.AdminDaoImpl, createFilePackage] - data-upload: Exception while adding new file package
org.hibernate.exception.JDBCConnectionException: Cannot open connection
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:97) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167) [hibernate-core-3.3.2.GA.jar:3.3.2.GA]
    at org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:142) …

我有一个简单的代码来提取zip文件,它正常工作正常,但在我的测试期间我尝试了我的代码与一些zip文件(我从互联网上下载的字体,图标和模板)只是为了确保它应该提取任何zip文件提供,但它不使用一些zip文件,这里是重新生成此问题的最小化代码:

package com.test.mytest;

import java.io.FileInputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;

public class ZipExtractTest {

    public static final String ZIP_FILE = "/Users/XXXXX/Downloads/janne.zip";

    public static void main(String[]args) {
        unzipFile(ZIP_FILE);
        unzipStream(ZIP_FILE);
    }

    public static void unzipFile(String zipName) {
        try {

            ZipFile zf = new ZipFile(zipName);

            Enumeration ent = zf.entries();

            while(ent.hasMoreElements()) {
                System.out.println(ent.nextElement());
            }

        } catch(Exception e) {
            System.out.println(e);
        }
    }

    public static void unzipStream(String zipName) {
        try {
            ZipInputStream zis = new ZipInputStream(new FileInputStream(zipName));
            ZipEntry ze = zis.getNextEntry();

            if(ze == …