jsp到mysql不能存入中文

开发环境:eclipse3.3+myeclipse6.0+jdk6.0+tomcat6.0+mysql5.5
mysql->jsp网页的中文能正确显示;
但是jsp网页上的中文不能正确存入到mysql中,是乱码,多数为“?”号;

1.我的每个jsp文件的开头都加有
<%@ page language="java" contentType="text/html; charset=GB2312" pageEncoding="GB2312"%>

2.my.ini 为

MySQL Server Instance Configuration File

----------------------------------------------------------------------

Generated by the MySQL Server Instance Configuration Wizard

#
#

Installation Instructions

----------------------------------------------------------------------

#

On Linux you can copy this file to /etc/my.cnf to set global options,

mysql-data-dir/my.cnf to set server-specific options

(@localstatedir@ for this installation) or to

~/.my.cnf to set user-specific options.

#

On Windows you should keep this file in the installation directory

of your server (e.g. C:\Program Files\MySQL\MySQL Server X.Y). To

make sure the server reads the config file use the startup option

"--defaults-file".

#

To run run the server from the command line, execute this in a

command line shell, e.g.

mysqld --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"

#

To install the server as a Windows service manually, execute this in a

command line shell, e.g.

mysqld --install MySQLXY --defaults-file="C:\Program Files\MySQL\MySQL Server X.Y\my.ini"

#

And then execute this in a command line shell to start the server, e.g.

net start MySQLXY

#
#

Guildlines for editing this file

----------------------------------------------------------------------

#

In this file, you can use all long options that the program supports.

If you want to know the options a program supports, start the program

with the "--help" option.

#

More detailed information about the individual options can also be

found in the manual.

#
#

CLIENT SECTION

----------------------------------------------------------------------

#

The following options will be read by MySQL client applications.

Note that only client applications shipped by MySQL are guaranteed

to read this section. If you want your own MySQL client program to

honor these values, you need to specify it as an option during the

MySQL client library initialization.

#
[client]

port=3306

[mysql]

#default-character-set=latin1
default-character-set=gbk

SERVER SECTION

----------------------------------------------------------------------

#

The following options will be read by the MySQL Server. Make sure that

you have installed the server correctly (see above) so it reads this

file.

#
[mysqld]

The TCP/IP Port the MySQL Server will listen on

port=3306

#Path to installation directory. All paths are usually resolved relative to this.
basedir="C:/Program Files/MySQL/MySQL Server 5.0/"

#Path to the database root
datadir="C:/Program Files/MySQL/MySQL Server 5.0/Data/"

The default character set that will be used when a new schema or table is

created and no character set is defined

#default-character-set=latin1
default-character-set=gbk

The default storage engine that will be used when create new tables when

default-storage-engine=INNODB

Set the SQL mode to strict

sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

The maximum amount of concurrent sessions the MySQL server will

allow. One of these connections will be reserved for a user with

SUPER privileges to allow the administrator to login even if the

connection limit has been reached.

max_connections=100

Query cache is used to cache SELECT results and later return them

without actual executing the same query once again. Having the query

cache enabled may result in significant speed improvements, if your

have a lot of identical queries and rarely changing tables. See the

"Qcache_lowmem_prunes" status variable to check if the current value

is high enough for your load.

Note: In case your tables change very often or if your queries are

textually different every time, the query cache may result in a

slowdown instead of a performance improvement.

query_cache_size=0

The number of open tables for all threads. Increasing this value

increases the number of file descriptors that mysqld requires.

Therefore you have to make sure to set the amount of open files

allowed to at least 4096 in the variable "open-files-limit" in

section [mysqld_safe]

table_cache=256

Maximum size for internal (in-memory) temporary tables. If a table

grows larger than this value, it is automatically converted to disk

based table This limitation is for a single table. There can be many

of them.

tmp_table_size=5M

How many threads we should keep in a cache for reuse. When a client

disconnects, the client's threads are put in the cache if there aren't

more than thread_cache_size threads from before. This greatly reduces

the amount of thread creations needed if you have a lot of new

connections. (Normally this doesn't give a notable performance

improvement if you have a good thread implementation.)

thread_cache_size=8

#*** MyISAM Specific options

The maximum size of the temporary file MySQL is allowed to use while

recreating the index (during REPAIR, ALTER TABLE or LOAD DATA INFILE.

If the file-size would be bigger than this, the index will be created

through the key cache (which is slower).

myisam_max_sort_file_size=100G

If the temporary file used for fast index creation would be bigger

than using the key cache by the amount specified here, then prefer the

key cache method. This is mainly used to force long character keys in

large tables to use the slower key cache method to create the index.

myisam_max_extra_sort_file_size=100G

If the temporary file used for fast index creation would be bigger

than using the key cache by the amount specified here, then prefer the

key cache method. This is mainly used to force long character keys in

large tables to use the slower key cache method to create the index.

myisam_sort_buffer_size=8M

Size of the Key Buffer, used to cache index blocks for MyISAM tables.

Do not set it larger than 30% of your available memory, as some memory

is also required by the OS to cache rows. Even if you're not using

MyISAM tables, you should still set it to 8-64M as it will also be

used for internal temporary disk tables.

key_buffer_size=8M

Size of the buffer used for doing full table scans of MyISAM tables.

Allocated per thread, if a full scan is needed.

read_buffer_size=64K
read_rnd_buffer_size=256K

This buffer is allocated when MySQL needs to rebuild the index in

REPAIR, OPTIMZE, ALTER table statements as well as in LOAD DATA INFILE

into an empty table. It is allocated per thread so be careful with

large settings.

sort_buffer_size=212K

#*** INNODB Specific options ***

Use this option if you have a MySQL server with InnoDB support enabled

but you do not plan to use it. This will save memory and disk space

and speed up some things.

#skip-innodb

Additional memory pool that is used by InnoDB to store metadata

information. If InnoDB requires more memory for this purpose it will

start to allocate it from the OS. As this is fast enough on most

recent operating systems, you normally do not need to change this

value. SHOW INNODB STATUS will display the current amount used.

innodb_additional_mem_pool_size=2M

If set to 1, InnoDB will flush (fsync) the transaction logs to the

disk at each commit, which offers full ACID behavior. If you are

willing to compromise this safety, and you are running small

transactions, you may set this to 0 or 2 to reduce disk I/O to the

logs. Value 0 means that the log is only written to the log file and

the log file flushed to disk approximately once per second. Value 2

means the log is written to the log file at each commit, but the log

file is only flushed to disk approximately once per second.

innodb_flush_log_at_trx_commit=1

The size of the buffer InnoDB uses for buffering log data. As soon as

it is full, InnoDB will have to flush it to disk. As it is flushed

once per second anyway, it does not make sense to have it very large

(even with long transactions).

innodb_log_buffer_size=1M

InnoDB, unlike MyISAM, uses a buffer pool to cache both indexes and

row data. The bigger you set this the less disk I/O is needed to

access data in tables. On a dedicated database server you may set this

parameter up to 80% of the machine physical memory size. Do not set it

too large, though, because competition of the physical memory may

cause paging in the operating system. Note that on 32bit systems you

might be limited to 2-3.5G of user level memory per process, so do not

set it too high.

innodb_buffer_pool_size=8M

Size of each log file in a log group. You should set the combined size

of log files to about 25%-100% of your buffer pool size to avoid

unneeded buffer pool flush activity on log file overwrite. However,

note that a larger logfile size will increase the time needed for the

recovery process.

innodb_log_file_size=10M

Number of threads allowed inside the InnoDB kernel. The optimal value

depends highly on the application, hardware as well as the OS

scheduler properties. A too high value may lead to thread thrashing.

innodb_thread_concurrency=8

3.mysql表的字符集都用的是gbk;

4.hibernate.cfg.xml为

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

<session-factory>
    <property name="dialect">
        net.sf.hibernate.dialect.MySQLDialect
    </property>
    <property name="connection.url">
        <![CDATA[jdbc:mysql://localhost:3306/webdemodb?useUnicode=true&characterEncoding=GBK&mysqlEncoding=GBK ]]>
    </property>
    <property name="connection.username">root</property>
    <property name="connection.password">admin</property>
    <property name="connection.useUnicode">true</property>
    <property name="connection.characterEncoding">GBK</property>
    <property name="connection.driver_class">
        com.mysql.jdbc.Driver
    </property>
    <property name="myeclipse.connection.profile">
        mysql_Demo
    </property>


    <mapping resource="com/cs2c/webdemo/po/Disposeinfo.hbm.xml" />
    <mapping resource="com/cs2c/webdemo/po/Progress.hbm.xml" ></mapping>
    <mapping resource="com/cs2c/webdemo/po/Role.hbm.xml" />
    <mapping resource="com/cs2c/webdemo/po/User.hbm.xml" />
</session-factory>

请各位看看,还需要做些什么? :arrow:
[b]问题补充:[/b]
过滤器,没有用过。
在web.xml中,这样对吗:
<?xml version="1.0" encoding="UTF-8"?>



encodingFilter



org.springframework.web.filter.CharacterEncodingFilter





encoding

UTF-8





forceEncoding

true







encodingFilter

.do





encodingFilter

.jsp


action
org.apache.struts.action.ActionServlet

config
/WEB-INF/struts-config.xml


debug
3


detail
3

0


action
*.do


index.jsp

还要加入spring框架吧?
web.xml改成上面的后,网页不能访问了?
<%@ page contentType="text/html;charset=UTF-8"%> 我在.jsp文件中还没有加。
[b]问题补充:[/b]
问题已经解决,结贴。
感谢参与讨论了兄弟姐妹,尤其是eyeqq (中级程序员),做个总结。
因为我的代码使用gb2312写的,并且文件数目较多,就没有改用utf-8(以后再做此类项目时会采用,以免出现不必要的麻烦),在满足我上述提到的4点以外,我又加入过滤器,即可解决中文乱码问题。
5.新建EncodingFilter.java文件:
package com.cs2c.webdemo.util;

import java.io.*;
import javax.servlet.*;

public class EncodingFilter implements Filter
{
protected String encoding = null;
protected FilterConfig config;

public void init(FilterConfig filterConfig) throws ServletException
{
this.config = filterConfig;
//从web.xml配置文件中获取编码配置
this.encoding = filterConfig.getInitParameter("Encoding");
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException
{
if(request.getCharacterEncoding() == null)
{
String encode = getEncoding();
if(encode != null)
{
//设置request的编码方式
request.setCharacterEncoding(encode);
}
}
chain.doFilter(request,response);
}
public String getEncoding()
{
return encoding;
}
public void destroy()
{

}

}

6.web.xml为:
<?xml version="1.0" encoding="UTF-8"?>


encodingFilter
com.cs2c.webdemo.util.EncodingFilter

Encoding
GB2312



encodingFilter
/*


action
org.apache.struts.action.ActionServlet

config
/WEB-INF/struts-config.xml


debug
3


detail
3

0


action
*.do


index.jsp

5个回答

用UTF-8吧
jsp里面
[code="html"]<%@ page contentType="text/html;charset=UTF-8"%>[/code]
数据库连接
[code="java"]jdbc:mysql://localhost:3306/test?useUnicode=true&amp;amp;characterEncoding=utf8[/code]
再用一下过滤器
[code="xml"]

encodingFilter

org.springframework.web.filter.CharacterEncodingFilter


encoding
UTF-8


forceEncoding
true



encodingFilter
.do


encodingFilter
.jsp

[/code]

[quote]再用一下过滤器[/quote]
这个是正确的。

你的mysql数据库的版本是什么?GBK?

使用过滤器处理就ok了,别的就不用管了,建议编码都使用utf-8

[quote]还要加入spring框架吧?
web.xml改成上面的后,网页不能访问了?
<%@ page contentType="text/html;charset=UTF-8"%> 我在.jsp文件中还没有加。 [/quote]
不用spring的也没关系,随便网上找一个就能用,很简单的。
帮你找了一个。
[url]http://www.blogjava.net/KingKong/archive/2007/01/04/91859.html[/url]

Csdn user default icon
上传中...
上传图片
插入图片
抄袭、复制答案,以达到刷声望分或其他目的的行为,在CSDN问答是严格禁止的,一经发现立刻封号。是时候展现真正的技术了!
立即提问