从数据库psql获取字符串

Question

您好我需要帮助找出如何将我的数据库中的字符串条目输入变量。我的所有代码都有效，如果我将数据库中的确切字符串复制并粘贴到我的bcrypt比较调用中，它就能完美运行。基本上我的问题是我的变量“compare”打印出来

[{“password”：“$ 2a $ 10 $ eilJb6SGKSSQm2b.U5tj.ut4o8.oHyJNVhbkpjcpeomCj4GlMEyqC”}]

但我只需要

“$ 2A $ 10 $ eilJb6SGKSSQm2b.U5tj.ut4o8.oHyJNVhbkpjcpeomCj4GlMEyqC”。有什么想法吗？

 account.on("end", function(result) {
    if(result.rows.length > 0){
        console.log("found account: ");
        console.log(JSON.stringify(result.rows, null, "   "));
        //turn the db entry into a string
        compare = JSON.stringify(result.rows, null, "   ");
        //compare the hashed password from database to parameter for password change
        bcrypt.compare(password, compare, function(err, res) {
        console.log("res result: " + res);
            if(res){
                    console.log("passwords are same");
                    //new query updating the password in the db
                    if(person=="s"){
                        //update db
                        client.query('UPDATE students SET password=($2) WHERE email=($1)',
                        [req.body.email, hash_new]);
                        console.log("changed students password");
                    } else {
                        //update db
                        client.query('UPDATE teachers SET password=($2) WHERE email=($1)',
                        [req.body.email, hash_new]);
                        console.log("changed teacher password");
                    }
            } else {
            console.log("passwords are not the same");
            }
        });
    } else {
    console.log("account not found!");
    }
});

Answer 1

而不是

compare = JSON.stringify(result.rows, null, "   ");

试

compare = result.rows[0].password;

您不需要JSON字符串，但需要JavaScript值。