Parameter index out of range (1 > number of parameters, which is 0)

遇到Parameter index out of range (1 > number of parameters, which is 0)怎么办？

2011年05月12日 星期四 23:45

遇到了Parameter index out of range (1 > number of parameters, which is 0) ，检查了很多遍错误。最后终于发现，原来PreparedStatement的sql中？是不能带有'单引号的。谢天谢地...一个很简单的失误，我折腾了4个钟头，忘大家引以为戒啊...

// 查询指定用户

public User_table selOperation(String id) {

String sql = "select * from user_table where Id='?' ";

User_table user = null;

try {

PreparedStatement pst = (PreparedStatement) AdoOpen.openConn()

.prepareStatement(sql);

pst.setString(1, id);

ResultSet rs = pst.executeQuery();

if (rs.next()) {

user = new User_table();

user.setId(rs.getString(1));

user.setName(rs.getString(2));

user.setPassword(rs.getString(3));

user.setOnline(rs.getInt(4));

user.setQita(rs.getString(5));

}

rs.close();

pst.close();

//AdoOpen.CloseConn();

} catch (SQLException e) {

e.printStackTrace();

}

return user;

}

java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0).

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:926)

at com.mysql.jdbc.PreparedStatement.checkBounds(PreparedStatement.java:3326)

at com.mysql.jdbc.PreparedStatement.setInternal(PreparedStatement.java:3310)

at com.mysql.jdbc.PreparedStatement.setString(PreparedStatement.java:4146)

at ado.User_ADO.selOperation(User_ADO.java:60)

at unit.ProssSeverl.rundom(ProssSeverl.java:95)

at unit.ProssSeverl.regidit(ProssSeverl.java:71)

at unit.ProssSeverl.Dealwith(ProssSeverl.java:43)

at unit.ProssSeverl.service(ProssSeverl.java:36)

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:233)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)

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:286)

at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)

at java.lang.Thread.run(Unknown Source)

原来:

String sql = "select * from user_table where Id='?' ";

?不可以加单引号 改为

String sql = "select * from user_table where Id=? ";