Android 将WebService与SQLite同步时，会出现数组和对象错误

我正在尝试将json数据输入sqlite，从web服务到android

这是我开始同步时出现的错误

错误出现在这段代码上

 public String processSync(String response) {
    String status = FAILED;
    try {
        String formattedData = getFormattedData(response);
        final GsonBuilder gsonBuilder = new GsonBuilder();
        final Gson gson = gsonBuilder.create();
        ProductDataBean[] productDataBeanArray = gson.fromJson(formattedData, ProductDataBean[].class);
        AdministratorHelper administratorHelper = new AdministratorHelper();
        status = administratorHelper.insertProductData(context, productDataBeanArray);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return status;
}

AdministratorHelper.java

public class AdministratorHelper {

DBLiteUtils dbLiteUtils;
AdministratorDao dao = new AdministratorDao();

public String insertProductData(Context context, ProductDataBean[] productDataBeanArray){
    String status = FAILED;
    try{
        dbLiteUtils = new DBLiteUtils(context);
        dbLiteUtils.open();
        status = dao.insertProductData(dbLiteUtils, productDataBeanArray);
    } catch (Exception e){
        e.printStackTrace();
    } finally {
        dbLiteUtils.close();
    }
    return status;
}

AdministratorDao.java

public class AdministratorDao {

private Cursor cursor;

//Insert Product Details into SQLite
public String insertProductData(DBLiteUtils dbLiteUtils, ProductDataBean[] productDataBeanArray){
    String status = FAILED;
    try {
        if(productDataBeanArray.length > 0) {
            //Delete Existing Data
            dbLiteUtils.deleteAll("ProductMaster");

            //Base Insert Query for inserting New Data into ProductMaster Table
            String query = "INSERT INTO ProductMaster(ItemId, Description, Barcode, TransStatusCode) VALUES ";
            //Iterate the productDataBeanArray in order to get productDataBean which contains a single product details
            for (ProductDataBean productDataBean : productDataBeanArray) {
                //Concatenate the Base Insert Query and the product details
                query = query+"('"+productDataBean.getItemId().trim()+"', '"+productDataBean.getDescription().trim().replace("\'", "\'\'")+"', '"+productDataBean.getBarcode().trim()+"', '"+productDataBean.getTransStatusCode().trim()+"'),"; //.trim() removes unwanted empty spaces
            }
            //Remove the last comma from the iterated complete query
            query = query.substring(0, query.length()-1);
            //execute the query
            dbLiteUtils.executeQuery(query);
            //return  success
            status = SUCCESS;
        }
    } catch (Exception e){
        e.printStackTrace();
    }
    return status;
}

这是我在VisualStudio中获取json数据的代码

 public class ProductController : ApiController
{

    public IEnumerable<Product> Get()
    {
        List<Product> pproducts;
        using (estocktakeEntities entities = new estocktakeEntities())
        {

            pproducts = entities.Products.ToList();
            //return entities.products.ToList();

        }
        return pproducts;

    }

---

错误日志是：

com.google.gson.JsonSyntaxException:java.lang.IllegalStateException:预期的BEGIN_对象，但在第1行列为字符串

，因此我猜问题是web服务提供的JSON正文

 public String processSync(String response) {
    String status = FAILED;
    try {
        String formattedData = getFormattedData(response);
        final GsonBuilder gsonBuilder = new GsonBuilder();
        final Gson gson = gsonBuilder.create();
        ProductDataBean[] productDataBeanArray = gson.fromJson(formattedData, ProductDataBean[].class);
        AdministratorHelper administratorHelper = new AdministratorHelper();
        status = administratorHelper.insertProductData(context, productDataBeanArray);
    } catch (Exception e) {
        Log.e("tag",formattedData); // log out this JSON
        e.printStackTrace();
    }
    return status;
}

而且

edit1

告诉我这个问题可能发生在web服务中。（我猜web服务返回了错误的JSON）。
我的建议是在Android项目中添加一些“容错”代码。

---

根本原因可能是web服务。

您能用完整的JSON更新这个问题吗？这似乎是Gson错误。您能检查一下这一行吗？`ProductDataBean[]productDataBeanArray=gson.fromJson（formattedData，ProductDataBean[].class）；`；尝试

ProductDataBean.class

而不是

ProductDataBean[]。class

@PedroRodrigues嗨，先生，我的完整jason有4000多条记录。这是一样的，它将以}]结尾。@RustFisher嗨，先生，我尝试将其更改为productDataBean，但是我的“status=administratorHelper.insertProductData（context，productDataBeanArray）；”将导致错误。我将更新并向您展示所有link@phan关于SQLite，我想

ContentResolver

可能会有帮助：）谢谢你的建议，我会去查阅容错，同时用我的web服务更新这篇文章

 public String processSync(String response) {
    String status = FAILED;
    try {
        String formattedData = getFormattedData(response);
        final GsonBuilder gsonBuilder = new GsonBuilder();
        final Gson gson = gsonBuilder.create();
        ProductDataBean[] productDataBeanArray = gson.fromJson(formattedData, ProductDataBean[].class);
        AdministratorHelper administratorHelper = new AdministratorHelper();
        status = administratorHelper.insertProductData(context, productDataBeanArray);
    } catch (Exception e) {
        Log.e("tag",formattedData); // log out this JSON
        e.printStackTrace();
    }
    return status;
}