我的要求是搜索存储在DB2中的目标列表，当我输入字符或字符列表时，我正在使用jquery自动完成和ajax调用。一旦我在目标文本框中输入字符或字符串，它应该通过查询DB2来检索输入格式的目标列表。我正在使用Spring JDBC模板。请帮助我找出导致错误的原因，我也是Spring JDBC的新手。谢谢！
Jquery和ajxa致电：
$("#destinationName").autocomplete({
source : function(request, response) {
$.ajax({
url : "${pageContext.request.contextPath}/showDestinations",
type : "POST",
data : {
term : request.term
},
dataType : "json",
success : function(data) {
response(data);
}
});
}
});
控制器：
@RequestMapping(value = "/showDestinations")
public void getDestinations(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
LOG.info("start of--/showDestinations -- MonitoringController.getDestinations()");
response.setContentType("application/json");
try {
String term = request.getParameter("term");
List<String> destinationList = null;
LOG.info("scenario 1");
destinationList = monitorDAO.fetchDestinations(term);
String searchList = new Gson().toJson(destinationList);
response.getWriter().write(searchList);
LOG.info("scenario 2");
} catch (Exception e) {
e.printStackTrace();
}
LOG.info("end of -- MonitoringController.getDestinations()");
}
DAO
public List<String> fetchDestinations(String destinationName)
throws Exception {
LOG.info("start of -- MonitorDAOImpl.fetchDestinations()");
LOG.info("scenario 3");
return this.jdbcTemplate.query(this.fetchDestinationsQuery, new Object[]{"%" + destinationName.toUpperCase() + "%",}, new RowMapper<String>(){
public String mapRow(ResultSet resultSet, int rowNum) throws SQLException {
return resultSet.getString((EmsTypes.DESTINATION.getValue()));
}
});
}
日志：
org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL [SELECT DISTINCT destination FROM ems_monit
(destination) like ?]; SQL state [ ]; error code [-313]; DB2 SQL error: SQLCODE: -313, SQLSTATE: , SQLERRMC: null; nested exception is com.ibm.db2.j
-313, SQLSTATE: , SQLERRMC: null
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:602)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:636)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:665)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:673)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:713)
at com.macys.platform.messaging.ems.monitoring.dao.MonitorDAOImpl.fetchDestinations(MonitorDAOImpl.java:191)
at com.macys.platform.messaging.ems.monitoring.controller.MonitoringController.getDestinations(MonitoringController.java:216)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:183)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
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:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
Caused by: com.ibm.db2.jcc.c.SqlException: DB2 SQL error: SQLCODE: -313, SQLSTATE: , SQLERRMC: null
at com.ibm.db2.jcc.c.fg.e(fg.java:1596)
at com.ibm.db2.jcc.c.fg.a(fg.java:1206)
at com.ibm.db2.jcc.b.gb.g(gb.java:140)
at com.ibm.db2.jcc.b.gb.a(gb.java:39)
at com.ibm.db2.jcc.b.w.a(w.java:34)
at com.ibm.db2.jcc.b.vb.g(vb.java:139)
at com.ibm.db2.jcc.c.fg.n(fg.java:1177)
at com.ibm.db2.jcc.c.gg.eb(gg.java:1862)
at com.ibm.db2.jcc.c.gg.d(gg.java:2295)
at com.ibm.db2.jcc.c.gg.V(gg.java:424)
at com.ibm.db2.jcc.c.gg.executeQuery(gg.java:407)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:93)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:93)
at org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStatement(JdbcTemplate.java:643)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:586)
... 61 more
答案 0 :(得分：0)
错误消息显示：
指定的主机变量数量不等于参数标记的数量
有关详细信息，请参阅IBM Knowledge Center。
您的查询需要2个参数。但是您的数组只包含一个参数。您必须将目标添加到阵列的时间。