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请解决更新查询(使用jsp)

//resultset 是 ResultSet 对象并正常工作 //rsmd 是 ResultSetMetaData 对象并正确获取数据

    for(int i=1;resultset.next();i++)
    {
    update_query="UPDATE DEMO_TABLE SET ";

    for(int j=1;j<=rsmd.getColumnCount();j++)
    {
        temp_str=request.getParameter(rsmd.getColumnName(j)+i);     // i am having id of textboxes as of columnname1,columnname2(eg. S_NO1, NAME1) using this

        if(j==rsmd.getColumnCount())
        {
           update_query+=rsmd.getColumnName(j)+"=\'"+temp_str+"\'" ;//not working
//WORKING  update_query+=rsmd.getColumnName(j)+"=\""+ temp_str+"\""  ;
        }

        else
        {
           update_query+=rsmd.getColumnName(j)+ "=\'"+ temp_str+"\' ,";//not working
//WORKING  update_query+=rsmd.getColumnName(j)+ "=\"" + temp_str + "\" ,";
        }
    }

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remaining update query statement with where clause...

please help...it's not working i.e. it's not inserting single quotes in update_query string
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1 回答 1

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语法似乎没有问题,应该可以。

例子:

public static void main(String[] arg) {
        String strColName="empName";
        String strVal = "smith";
        String update_query = "Update employee SET "; 
        update_query += strColName + "=\'"+ strVal +"\'"; 
        System.out.println(update_query);
    }

输出:

跑:

更新员工 SET empName='smith'

构建成功(总时间:0 秒)

于 2013-04-05T06:31:23.273 回答