[在PI Java映射中使用GSON将XML转换为JSON

Question

我在使用GSON库将源xml转换为JSON时遇到问题。请在下面的代码，源xml和输出中找到。我正在SAP PI的Java映射中实现此目标，在该映射中，我正在获取源xml作为对此Java代码的输入。

源XML：

<data>
<ERP>0080001</ERP>
<Shiptoparty>0088000</Shiptoparty>
<Shippingpoint>503</Shippingpoint>
<Issuedate>20181102</Issuedate>
<products>
<Unit>L</Unit>
<QTY>2.000 </QTY>
<SKUno>000000000011</SKUno>
</products>
<products>
<Unit>L</Unit>
<QTY>0.000 </QTY>
<SKUno>000000000011000078</SKUno>
</products>
</data>

代码：

package xmlgsonjson;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.sap.aii.mapping.api.AbstractTransformation;
import com.sap.aii.mapping.api.StreamTransformationException;
import com.sap.aii.mapping.api.TransformationInput;
import com.sap.aii.mapping.api.TransformationOutput;

public class MakeItJSONByGSON extends AbstractTransformation 
{

public String targetfile ="";

public MakeItJSONByGSON() {}

public void transform(TransformationInput in, TransformationOutput out) throws StreamTransformationException
{
try {
    String sourcexml = "";

    String line = "";


    InputStream inputstream = in.getInputPayload().getInputStream();
    BufferedReader br = new BufferedReader(new InputStreamReader(inputstream));
    OutputStream outputstream = out.getOutputPayload().getOutputStream();

    byte[] b = null;
    try {
        b = new byte[inputstream.available()];
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    try {
        inputstream.read(b);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    String inputContent = new String(b);




    sourcexml = inputContent;



    try {
        while ((line = br.readLine()) != null) {

        sourcexml = sourcexml + line;


        }
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }

    Gson gson = new GsonBuilder().setPrettyPrinting().create();

    String jsonPrettyPrintString = gson.toJson(sourcexml);


    targetfile = jsonPrettyPrintString;


out.getOutputPayload().getOutputStream().write(targetfile.getBytes());
}
catch (Exception e)
{
e.printStackTrace();
}
}
}

输出：

"\u003cdata\u003e\n    \u003cERP\u003e0080001\u003c/ERP\u003e\n    \u003cShiptoparty\u003e0088000\u003c/Shiptoparty\u003e\n    \u003cShippingpoint\u003e503\u003c/Shippingpoint\u003e\n    \u003cIssuedate\u003e20181102\u003c/Issuedate\u003e\n    \u003cproducts\u003e\n    \u003cUnit\u003eL\u003c/Unit\u003e\n    \u003cQTY\u003e2.000 \u003c/QTY\u003e\n    \u003cSKUno\u003e000000000011\u003c/SKUno\u003e\n    \u003c/products\u003e\n    \u003cproducts\u003e\n    \u003cUnit\u003eL\u003c/Unit\u003e\n    \u003cQTY\u003e0.000 \u003c/QTY\u003e\n    \u003cSKUno\u003e000000000011000078\u003c/SKUno\u003e\n    \u003c/products\u003e\n    \u003c/data\u003e"

预期输出：

{"data": [
    {
        "ERP": 0080001,
        "Issuedate": 20181102,
        "Shippingpoint": 503,
        "Shiptoparty": 0088000,
        "products": [
            {
                "Unit": "L"
                "QTY": 2.000,
                "SKUno": 000000000011,   
            },
            {
                "Unit": "L"
                "QTY": 0.000,
                "SKUno": 000000000011000078,

            }
        ]
    }

]}

请让我知道如何解决此问题。

Answer 1

我认为您在编码方面遇到问题。可能的解决方法是

String jsonString = new Gson().toJson(objectToEncode);
byte[] utf8JsonString = jsonString.getBytes("UTF8");
responseToClient.write(utf8JsonString, 0, utf8JsonString.Length);

我希望这对您有用：）