[英]Parse multiple JSON objects in one file
I have multiple JSON
objects stored in one file separated by new line character (but one object can span over multiple lines) - it's an output from MongoDB
shell. 我有多个
JSON
对象存储在一个用换行符分隔的文件中(但是一个对象可以跨越多行)-这是MongoDB
shell的输出。
What is the easiest way to parse them (get them in an array or collection) using Gson
and Java
? 使用
Gson
和Java
解析它们(将它们放入数组或集合中)的最简单方法是什么?
Another possibility is to use Jackson and its ObjectReader.readValues() methods: 另一种可能性是使用Jackson及其ObjectReader.readValues()方法:
public <T> Iterator<T> readStream(final InputStream _in) throws IOException {
ObjectMapper mapper = new ObjectMapper();
// configure object mappings
...
// and then
return mapper.reader(MapObject.class).readValues(_in);
}
works pretty good on big enough (few gigabytes) JSON datafiles 在足够大(几千兆字节)的JSON数据文件上工作得很好
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