我正在尝试从文件中拆分 Json 数据。我的文件包含一个 Json 数组，其中包含 20 个对象。我希望将这 20 个对象分成 20 个不同的文件。我的代码可以工作并创建文件，我也想将它们保存在不同的 String 对象中，文件中的数据很困惑。困惑如何以正确的方式拆分!
我的问题:
1) 文件中我的 json 格式。
分割并写入文件后我得到的 json 格式 
我的代码
import java.io.*;
import java.util.*;
import org.json.*;
public class JsonSpilt {
private static final int BATCH_SIZE = 10;
public static void flushFile(List<Object> objects, int d) throws Exception {
try (FileOutputStream output = new FileOutputStream("/home/system5/Music/tweet-" + d
+ ".json");
Writer writer = new OutputStreamWriter(output, "UTF-8")) {
JSONArray jsonArray = new JSONArray(objects);
jsonArray.write(writer);
}
}
public static void main(String[] args) throws Exception {
int outputIndex = 0;
try (InputStream input = new BufferedInputStream(
new FileInputStream("/home/system5/Videos/tweet.json"))) {
JSONTokener tokener = new JSONTokener(input);
if (tokener.nextClean() != '[') {
throw tokener.syntaxError("Expected start of JSON array");
}
List<Object> jsonObjects = new ArrayList<>();
while (tokener.nextClean() != ']') {
tokener.back();
jsonObjects.add(tokener.nextValue());
if (jsonObjects.size() == BATCH_SIZE) {
flushFile(jsonObjects, outputIndex);
jsonObjects.clear();
outputIndex++;
}
if (tokener.nextClean() != ',') {
tokener.back();
}
}
if (!jsonObjects.isEmpty()) {
flushFile(jsonObjects, outputIndex);
}
// Verify that end of input is reached.
if (tokener.nextClean() != 0) {
throw tokener.syntaxError("Expected end of document");
}
}
}}
示例输入包含 json 数组中的两个对象。
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最佳答案
根据您的屏幕截图，我认为一切都很好。如果您担心 JSON 对象内的值的顺序，那么您不必担心。请参阅以下链接以获取相同信息。 Does the sequence of the values matter in a JSON object?
关于java - 将 Json-Array 的 20 个对象拆分为单独的单个数组 json 文件？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34986288/