一个我无法看懂的错误 希望高手帮帮忙

org.apache.jasper.JasperException: An exception occurred processing JSP page /login.jsp at line 74: 
5: <%String user_name=request.getParameter("UserName").trim();
6:   String pass_word=request.getParameter("PassWord").trim();
7:   Rst=Stmt.executeQuery("select password from user where username='"+user_name+"'");
8:   if(!Rst.next())
9:   out.print("娌℃湁杩欎釜鐢ㄦ埛锛�);
10:   else
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause javax.servlet.ServletException: java.sql.SQLException: [Microsoft][ODBC SQL Server Driver][SQL Server]在关键字 'user' 附近有语法错误。
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:852)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
org.apache.jsp.login_jsp._jspService(login_jsp.java:100)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
root cause java.sql.SQLException: [Microsoft][ODBC SQL Server Driver][SQL Server]在关键字 'user' 附近有语法错误。
sun.jdbc.odbc.JdbcOdbc.createSQLException(Unknown Source)
sun.jdbc.odbc.JdbcOdbc.standardError(Unknown Source)
sun.jdbc.odbc.JdbcOdbc.SQLExecDirect(Unknown Source)
sun.jdbc.odbc.JdbcOdbcStatement.execute(Unknown Source)
sun.jdbc.odbc.JdbcOdbcStatement.executeQuery(Unknown Source)
org.apache.jsp.login_jsp._jspService(login_jsp.java:83)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)