android - 注册 VOLLEY 和 KOTLIN 问题，有人能告诉我我遇到的问题是什么吗，错误 :

Question

我正面临以下代码的错误有人可以帮帮我吗我正在尝试通过此代码注册到应用程序

注册 VOLLEY 和 KOTLIN 问题，有人能告诉我我遇到的错误是什么问题吗:

我正在添加这个以获取更多详细信息以发布我的问题

W/System.err: org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONObject
        at org.json.JSON.typeMismatch(JSON.java:111)


 `override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        loading = findViewById<ProgressBar>(R.id.loading)
        name = findViewById<EditText>(R.id.name)
        email = findViewById<EditText>(R.id.email)
        password = findViewById<EditText>(R.id.password)
        c_password = findViewById<EditText>(R.id.password)
        btn_regist = findViewById<Button>(R.id.btn_regist)

        btn_regist.setOnClickListener() { v -> regist() }
    }

    private fun regist(){
        loading.visibility = View.VISIBLE
        btn_regist.visibility = View.GONE

        val name:String = this.name.text.trim().toString()
        val email:String = this.email.text.trim().toString()
        val password:String = this.password.text.trim().toString()

        val stringRequest = object : StringRequest(com.android.volley.Request.Method.POST, URL_REGIST,
            com.android.volley.Response.Listener<String>() { response ->
                try {
                    val jsonObject = JSONObject(response)
                    val success : String = jsonObject.getString("success")
                    if (success.equals("1")){
                        Toast.makeText(this, "Register Success ! Eyyvalll !", Toast.LENGTH_SHORT).show()
                    }
                }
                catch (e: JSONException){
                    e.printStackTrace()
                    Toast.makeText(this, "Register Error ! goh !!!! :/" + e.toString() , Toast.LENGTH_SHORT).show()
                    loading.visibility = View.GONE
                    btn_regist.visibility = View.VISIBLE

                }
            }, com.android.volley.Response.ErrorListener {
                    error -> error.printStackTrace()
                    Toast.makeText(this, "Register Error ! SHIT :/" + error.toString() , Toast.LENGTH_SHORT).show()
                    loading.visibility = View.GONE
                    btn_regist.visibility = View.VISIBLE
            }) {
//            @Throws(AuthFailureError::class)
            override fun getParams(): Map<String, String> {
                val params = HashMap<String, String>()
                params["name"] = name
                params["email"] = email
                params["password"] = password
                return params
            }
        }

        val requestQueue = Volley.newRequestQueue(this)
        requestQueue.add(stringRequest)

    }`

Answer 1

我想到这个错误是因为响应结果不是有效的 json 格式

com.android.volley.Response.Listener<String>() { response ->
    try {
            //at this point,you can debug result with console log your response
            //because if response have a php error then json format not valid 
            Log.d("RESPONSE"," $response")
            val jsonObject = JSONObject(response)
            //at this you can check if json has have key name success
            if (jsonObject.has("success")){
                val success : String = jsonObject.getString("success")
                if (success.equals("1")){
                    Toast.makeText(this, "Register Success ! Eyyvalll !", Toast.LENGTH_SHORT).show()
                }
            }
    }
    ......

希望对你有帮助