请大神指点一下，程序报错com.microsoft.sqlserver.jdbc.SQLServerException: '=' 附近有语法错误

Question

package gs.dbc;import java.sql.Connection;
import java.sql.DriverManager;import java.sql.*;import java.sql.ResultSet;
import java.sql.SQLException;public class testDB {
private static Connection conn;
private static Statement st;
private static ResultSet rs;
public static Connection getConn(){

try {
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");

String url="jdbc:sqlserver://localhost:1433;databaseName=bs";
conn=DriverManager.getConnection(url,"sa","wangshaowei03");
st=conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
} catch (Exception e) {
e.printStackTrace();
}
return conn;
}

// public static void main(String[] args) {
// Connection c=getConn();
// System.out.print("连接成功！");
// closeConn();
// }
//数据查询方法
public ResultSet query(String sql) {
Connection c = getConn();
// System.out.println(conn);
try{
st = c.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
rs=st.executeQuery(sql);
}catch(SQLException e)
{
e.printStackTrace();
}
return rs;
}
//查询一行一列数据
public Object getOnlyOne(String sql){
Object str=null;
ResultSet rs=query(sql);
try {
if(rs.first()){
str=rs.getObject(1);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return str;
}
//数据修改删除方法
public int deleteOrUpdate(String sql) {
int row=0;
Connection c = getConn();
try{
st=c.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
row=st.executeUpdate(sql);
}catch(SQLException e)
{
e.printStackTrace();
}
return row;
}
//判断是否有查询结果
public boolean checkTrue(String sql) {
ResultSet rs=query(sql);
try {
if(rs.next()){
return true;
}else{
return false;
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return false;
}
}
//数据添加方法
public boolean insort(String sql) {
boolean row =false;
Connection c = getConn();
try{
st = c.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
row=st.execute(sql);
}catch(SQLException e)
{
e.printStackTrace();
}
return row;
}
//数据库连接关闭
public static void closeConn(){
if(conn!=null){
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}

Answer 1

首先要保证能连接到sqlserver数据库。执行哪个方法时候报错的？ 
执行的sql语句是什么？

Answer 2

你这个连接URL看起来没什么问题，确认下要连的数据库名字叫db吗？sqlserver jdbc是什么版本的？顺便把完整的异常堆栈信息贴出来

Answer 3

执行的是查询的sql语句

Answer 4

不知道哪里的错
com.microsoft.sqlserver.jdbc.SQLServerException: '=' 附近有语法错误。
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:196)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.getNextResult(SQLServerStatement.java:1454)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.doExecuteStatement(SQLServerStatement.java:786)
at com.microsoft.sqlserver.jdbc.SQLServerStatement$StmtExecCmd.doExecute(SQLServerStatement.java:685)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:4026)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:1416)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeCommand(SQLServerStatement.java:185)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeStatement(SQLServerStatement.java:160)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeUpdate(SQLServerStatement.java:642)
at gs.dbc.testDB.deleteOrUpdate(testDB.java:83)
at gs.adsvlt.Del.doPost(Del.java:63)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at gs.svlet.EncodingFilter.doFilter(EncodingFilter.java:25)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:317)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)

Answer 5

这不应该是sql语句有错误么，你把错误的时候的查询语句发出来给大家看看

Answer 6

//数据查询方法
public ResultSet query(String sql) {
Connection c = getConn();
// System.out.println(conn);
try{
st = c.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY);
rs=st.executeQuery(sql);
}catch(SQLException e)
{
e.printStackTrace();
}
return rs;
}
public int queryCount(String sql){
int count = 0;
Connection connection = getConn();
try {
st = connection.createStatement();
rs = st.executeQuery(sql);
    rs.next();
count = rs.getInt(1); } catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

return count;
}
//查询一行一列数据
public Object getOnlyOne(String sql){
Object str=null;
ResultSet rs=query(sql);
try {
if(rs.first()){
str=rs.getObject(1);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return str;
}

Answer 7

请认真检查你的sql