mysql乱码问题

Question

title = syndEntry.getTitle();
System.out.println(title);
// String url = syndEntry.getUri().replaceFirst("http://", "");
String query = "select * from " + newsTableName
+ "where title = " + title;
Statement queryStatement = conn.createStatement();
ResultSet newsResultSet = queryStatement.executeQuery(query);出错的代码如上。我把title给打印出来没错，但通过jdbc传给mysql的title乱码了。
出错信息为：从开始到现在 -图记
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '= ???????§???°??°??¨ -???è?°' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
at com.mysql.jdbc.Util.getInstance(Util.java:382)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1052)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3603)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3535)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1989)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2150)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2620)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2570)
at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1476)
at com.yulin.struts.action.ViewNewsAction.execute(ViewNewsAction.java:120)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
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:619)急啊

Answer 1

在连接的URL后面加上编码方式,如下:
jdbc:mysql://localhost:3306/dbname?useUnicode=true&characterEncoding=UTF-8

Answer 2

程序能正常显示的字符集是什么就在你连接选择完数据库后查询“set names 字符集”，数据库设计的时候校验连接以及数据库、表的字符集要写成一致

Answer 3

http://blog.csdn.net/ACMAIN_CHM/archive/2009/05/12/4174186.aspx
MySQL 中文显示乱码

Answer 4

将Mysql数据库的字符集设置成UTF-8试试（也就是配置个人信息时候的第二选项）。