如何让这段代码提交一个带有jQuery / Ajax工作的UTF-8表单textarea？
我在提交包含带Ajax的UTF-8字符串的表单时遇到问题。 我正在开发一个在Tomcat服务器上运行的Struts Web应用程序。 这是我设置为使用UTF-8的环境：
-
我已将属性
URIEncoding="UTF-8" useBodyEncodingForURI="true"添加到Tomcat的conf/server.xml文件的Connector标记中。 -
我有一个
utf-8_general_ci数据库 -
我正在使用下一个filter来确保我的请求和响应以UTF-8编码
package filters; import java.io.IOException; import javax.servlet.*; public class UTF8Filter implements Filter { public void destroy() {} public void doFilter(ServletRequest request,ServletResponse response, FilterChain chain) throws IOException, ServletException { request.setCharacterEncoding("UTF-8"); response.setContentType("text/html;charset=UTF-8"); chain.doFilter(request, response); } public void init(FilterConfig filterConfig) throws ServletException { } } -
我在WEB-INF / web.xml中使用此filter
-
我正在使用我的JSON响应的下一个代码：
public static void populateWithJSON(HttpServletResponse response,JSONObject json) { String CONTENT_TYPE="text/x-json;charset=UTF-8"; response.setContentType(CONTENT_TYPE); response.setHeader("Cache-Control", "no-cache"); try { response.getWriter().write(json.toString()); } catch (IOException e) { throw new ApplicationException("Application Exception raised in RetrievedStories", e); } }
一切似乎都运行正常（来自数据库的内容正确显示，我能够提交以UTF-8存储在数据库中的表单）。 问题是我无法使用Ajax提交表单 。 我使用jQuery，我认为问题是Ajax请求中缺少contentType字段。 但是我错了。 我有一个非常简单的表单来提交包含id和body的注释。 身体字段可以是不同的语言，例如西class牙语，德语或其他语言。
如果我提交包含contraseña body textarea的contraseña ， Firebug会告诉我：
请求标题
- 主持 localhost：8080
- Accept-Charset ISO-8859-1，utf-8; q = 0.7; * q = 0.7
- Content-Type application / x-www-form-urlencoded; charset UTF-8
如果我在Firebug中使用参数执行复制位置 ，则编码似乎已经错误：
http://localhost:8080/Cerepedia/corporate/postStoryComment.do?&body=contrase%C3%B1a&id=88
这是我的jQuery代码：
function addComment() { var comment_body = $("#postCommentForm textarea").val(); var item_id = $("#postCommentForm input:hidden").val(); var url = rooturl+"corporate/postStoryComment.do?"; $.post(url, { id: item_id, body: comment_body } , function(data){ /* Do stuff with the answer */ }, "json"); }
使用jQuery提交表单会导致下一个错误服务器端（请注意我正在使用Hibernate ）。
javax.servlet.ServletException: org.hibernate.exception.GenericJDBCException: Could not execute JDBC batch update at org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:520) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:427) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462) at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) 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 com.cerebra.cerepedia.security.AuthorizationFilter.doFilter(AuthorizationFilter.java:78) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.cerebra.cerepedia.hibernate.HibernateSessionRequestFilter.doFilter(HibernateSessionRequestFilter.java:30) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at filters.UTF8Filter.doFilter(UTF8Filter.java:14) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 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(Unknown Source) Caused by: org.hibernate.exception.GenericJDBCException: Could not execute JDBC batch update at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:103) at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:91) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:249) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:235) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:139) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000) at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338) at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106) at com.cerebra.cerepedia.item.dao.ItemDAOHibernate.addComment(ItemDAOHibernate.java:505) at com.cerebra.cerepedia.item.ItemManagerPOJOImpl.addComment(ItemManagerPOJOImpl.java:164) at com.cerebra.cerepedia.struts.item.ItemAction.addComment(ItemAction.java:126) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269) at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170) at org.apache.struts.actions.MappingDispatchAction.execute(MappingDispatchAction.java:166) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425) ... 26 more Caused by: java.sql.BatchUpdateException: Incorrect string value: '\xF1a' for column 'body' at row 1 at com.mysql.jdbc.ServerPreparedStatement.executeBatch(ServerPreparedStatement.java:657) at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeBatch(NewProxyPreparedStatement.java:1723) at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48) at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:242) ... 44 more 26-ago-2008 19:54:48 org.apache.catalina.core.StandardWrapperValve invoke GRAVE: Servlet.service() para servlet action lanzó excepción java.sql.BatchUpdateException: Incorrect string value: '\xF1a' for column 'body' at row 1 at com.mysql.jdbc.ServerPreparedStatement.executeBatch(ServerPreparedStatement.java:657) at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeBatch(NewProxyPreparedStatement.java:1723) at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48) at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:242) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:235) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:139) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000) at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338) at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106) at com.cerebra.cerepedia.item.dao.ItemDAOHibernate.addComment(ItemDAOHibernate.java:505) at com.cerebra.cerepedia.item.ItemManagerPOJOImpl.addComment(ItemManagerPOJOImpl.java:164) at com.cerebra.cerepedia.struts.item.ItemAction.addComment(ItemAction.java:126) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269) at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170) at org.apache.struts.actions.MappingDispatchAction.execute(MappingDispatchAction.java:166) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462) at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) 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 com.cerebra.cerepedia.security.AuthorizationFilter.doFilter(AuthorizationFilter.java:78) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.cerebra.cerepedia.hibernate.HibernateSessionRequestFilter.doFilter(HibernateSessionRequestFilter.java:30) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at filters.UTF8Filter.doFilter(UTF8Filter.java:14) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 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(Unknown Source) javax.servlet.ServletException: java.lang.NumberFormatException: null at org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:520) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:427) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449) 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 com.cerebra.cerepedia.security.AuthorizationFilter.doFilter(AuthorizationFilter.java:78) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.cerebra.cerepedia.hibernate.HibernateSessionRequestFilter.doFilter(HibernateSessionRequestFilter.java:30) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at filters.UTF8Filter.doFilter(UTF8Filter.java:14) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 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(Unknown Source) Caused by: java.lang.NumberFormatException: null at java.lang.Long.parseLong(Unknown Source) at java.lang.Long.valueOf(Unknown Source) at com.cerebra.cerepedia.struts.item.ItemAction.addComment(ItemAction.java:120) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269) at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170) at org.apache.struts.actions.MappingDispatchAction.execute(MappingDispatchAction.java:166) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425) ... 26 more 26-ago-2008 20:13:25 org.apache.catalina.core.StandardWrapperValve invoke GRAVE: Servlet.service() para servlet action lanzó excepción java.lang.NumberFormatException: null at java.lang.Long.parseLong(Unknown Source) at java.lang.Long.valueOf(Unknown Source) at com.cerebra.cerepedia.struts.item.ItemAction.addComment(ItemAction.java:120) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269) at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170) at org.apache.struts.actions.MappingDispatchAction.execute(MappingDispatchAction.java:166) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449) 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 com.cerebra.cerepedia.security.AuthorizationFilter.doFilter(AuthorizationFilter.java:78) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.cerebra.cerepedia.hibernate.HibernateSessionRequestFilter.doFilter(HibernateSessionRequestFilter.java:30) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at filters.UTF8Filter.doFilter(UTF8Filter.java:14) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 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(Unknown Source)
你有没有尝试在通话前添加以下内容：
$.ajaxSetup({ scriptCharset: "utf-8" , contentType: "application/json; charset=utf-8" });
这里解释了选项。
contentType：将数据发送到服务器时，请使用此内容类型。 默认为“application / x-www-form-urlencoded”，对大多数情况都适用。
scriptCharset：仅适用于具有’jsonp’或’script’数据类型和GET类型的请求。 强制将请求解释为某个字符集。 只需要远程和本地内容之间的字符集差异。
我遇到了同样的问题。 我看到Internet Explorer 8发送此标头：
content-type = application/x-www-form-urlencoded
而Firefox发送此信息：
content-type = application/x-www-form-urlencoded; charset=UTF-8
我的解决方案只是强迫jQuery使用Firefox内容类型：
$.ajaxSetup({ scriptCharset: "utf-8" ,contentType: "application/x-www-form-urlencoded; charset=UTF-8" });
我有同样的问题，并通过降级到mysql-connector-odbc-3.51.16来修复它。
我也有同样的问题，我用这种方式修复它：
在PHP中，在将数据存储到数据库之前，我使用了htmlentities()函数。 在显示数据期间，我使用了html_entity_decode()函数。 这很有效。 我强烈希望这对你也有用。
由于例外是jdbc错误，因此最好的方法是在将输入发送到数据库之前捕获输入。
java.sql.BatchUpdateException：字符串值不正确：第1行第’body’列的’\ xF1a’
单个字符导致exception。
可能是您需要手动覆盖某些字符的情况。 你会发现，当使用非拉丁字母语言（就像我一样）时，这是一种常见的痛苦。
我经常看到这个问题。 元在您的PHP数据操作中始终不起作用，因此只需在开头键入：