问题描述
我的应用程序期望 Json 文件有两种不同的结构。一个文件，其中每一行是一个完整的 json，另一个文件是一个 Json 文件。 例如：一个文件将具有这种结构
package com.example.taskmasterv3;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.room.Dao;
import androidx.room.Database;
import androidx.room.Delete;
import androidx.room.Entity;
import androidx.room.Insert;
import androidx.room.PrimaryKey;
import androidx.room.Query;
import androidx.room.Room;
import androidx.room.RoomDatabase;
import android.content.Intent;
import android.database.sqlException;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class SubtaskActivity extends AppCompatActivity {
EditText etSubtaskName;
EditText etTaskName;
Button btnDone,btnCancel;
RadioGroup radgrpPri,radgrpTime;
RadioButton radbtnPriHigh,radbtnPriMed,radbtnPriLow,radbtnTimeMore,radbtnTimeMed,radbtnTimeLess;
boolean priHigh,priMed,priLow,timeMore,timeMed,timeLess;
String subtaskName;
String pri;
String time;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_subtask);
btnDone = findViewById(R.id.btnDone);
radgrpPri = findViewById(R.id.radgrpPri);
radgrpTime = findViewById(R.id.radgrpTime);
radbtnPriHigh = findViewById(R.id.radbtnPriHigh);
radbtnPriMed = findViewById(R.id.radbtnPriMed);
radbtnPriLow = findViewById(R.id.radbtnPriLow);
radbtnTimeMore = findViewById(R.id.radbtnTimeMore);
radbtnTimeMed = findViewById(R.id.radbtnTimeMed);
radbtnTimeLess = findViewById(R.id.radbtnTimeLess);
etSubtaskName = findViewById(R.id.etSubtaskName);
btnCancel = findViewById(R.id.btnCancel);
radgrpPri.setonCheckedchangelistener(new RadioGroup.OnCheckedchangelistener() {
@Override
public void onCheckedChanged(RadioGroup group,int checkedId) {
if (radbtnPriHigh.isChecked())
{
priHigh = true;
priLow = false;
priMed = false;
pri = "h";
}
else if (radbtnPriMed.isChecked())
{
priHigh = false;
priLow = false;
priMed = true;
pri = "m";
}
else if (radbtnPriLow.isChecked())
{
priHigh = false;
priLow = true;
priMed = false;
pri = "l";
}
else {
priLow = true;
pri = "l";
}
}
});
radgrpTime.setonCheckedchangelistener(new RadioGroup.OnCheckedchangelistener() {
@Override
public void onCheckedChanged(RadioGroup group,int checkedId) {
if (radbtnTimeMore.isChecked())
{
timeMore = true;
timeMed = false;
timeLess = false;
time = "more";
}
else if (radbtnTimeMed.isChecked())
{
timeMore = false;
timeMed = true;
timeLess = false;
time = "med";
}
else if (radbtnTimeLess.isChecked())
{
timeMore = false;
timeMed = false;
timeLess = true;
time = "less";
}
else
{
timeLess = true;
time = "less";
}
}
});
btnDone.setonClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String name = etSubtaskName.getText().toString().trim();
Intent intent = new Intent(SubtaskActivity.this,TaskInfo.class);
intent.putExtra("subtaskName",name);
intent.putExtra("priHigh",priHigh);
intent.putExtra("priMed",priMed);
intent.putExtra("priLow",priLow);
intent.putExtra("timeMore",timeMore);
intent.putExtra("timeMed",timeMed);
intent.putExtra("timeLess",timeLess);
setResult(RESULT_OK,intent);
SubtaskActivity.this.finish();
// THIS IS WHERE I SAVE THE DATA IN ROOM
AsyncTask.execute(new Runnable() {
@Override
public void run() {
SubtaskDetails subtaskDetails = new SubtaskDetails(etSubtaskName.toString().trim(),pri,time);
AppDatabase.getDatabase(getApplicationContext()).userDao().insertAll(subtaskDetails);
}
});
}
});
btnCancel.setonClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
etSubtaskName.setText("");
radgrpPri.clearCheck();
radgrpTime.clearCheck();
finish();
}
});
}
}
和其他具有这种结构的文件：
{"Logging": {"LogLevel": {"Default": "Warning","System": "Warning","Microsoft": "Warning" }}}我下面的代码进行了反序列化，它适用于第一个结构，但对于其他文件失败，说错误为
读取令牌时意外结束。路径''。"}
我的代码：
{"Logging": {"LogLevel": {"Default": "Warning","Microsoft": "Warning"
}}}
解决方法
您正在将 JSON 文件的每一行读入数据变量，试图解析每一行。
因此它尝试解析第 1 行，即 {"Logging": {"LogLevel": {"Default": "Warning",。由于这不是有效的 JSON 对象，解析失败。
改为使用 File.ReadAllText 将整个文件读入单个字符串，然后解析该字符串。或者简单地将字符串数组连接回单个字符串：
var data = JsonConvert.DeserializeObject<JObject>(string.Join(Environment.NewLine,lines));}