我想使用 Apache HttpClient 發(fā)布 JSON 請求。但是我想發(fā)送到目標(biāo)系統(tǒng)的 Json 數(shù)據(jù)有點復(fù)雜。下面是我要發(fā)送的 json{ "name":"xyz", "id":"428","mailId": [ "mailme@mail.com" ], "bundle1": { "opwarden": { "number":"132344345", "title":"title" } }}在 Java 中收縮上述 json 數(shù)據(jù)的最好和最簡單的方法是什么？
2 回答
郎朗坤
TA貢獻(xiàn)1921條經(jīng)驗 獲得超9個贊
使用Jackson 的POJO 和ObjectMapper ：
public class Data {
private final String name;
private final String id;
private final List<String> mailId;
private final List<Opwarden> bundle1;
public Data(final String name, final String id, final List<String> mailId, final List<Opwarden> bundle1) {
this.name = name;
this.id = id;
this.mailId = mailId;
this.bundle1 = bundle1;
}
public String getName() {
return name;
}
public String getId() {
return id;
}
public List<String> getMailId() {
return mailId;
}
public List<Opwarden> getBundle1() {
return bundle1;
}
}
和歐普華登：
public class Opwarden {
private final String number;
private final String title;
public Opwarden(final String number, final String title) {
this.number = number;
this.title = title;
}
public String getNumber() {
return number;
}
public String getTitle() {
return title;
}
}
您可以使用以下方法創(chuàng)建 JSON：
ObjectMapper objectMapper = new ObjectMapper();
Data data = new Data("xyz", "428", List.of("mailme@mail.com"), List.of(new Opwarden("132344345", "title")));
System.out.println(objectMapper.writeValueAsString(data));
輸出：
{
"name": "xyz",
"id": "428",
"mailId": [
"mailme@mail.com"
],
"bundle1": [
{
"number": "132344345",
"title": "title"
}
]
}
鴻蒙傳說
TA貢獻(xiàn)1865條經(jīng)驗 獲得超7個贊
我建議使用 JACKSON 對象映射器。如果您不想重新創(chuàng)建上述模型結(jié)構(gòu)，請編寫 pojo。
可以在這里找到一個很好的教程在這里輸入鏈接描述
你基本上是這樣使用它的：
ObjectMapper objectMapper = new ObjectMapper(); String jsonRepresentation = objectMapper.writeValueAsString( anyObject );
如上所述，anyObject 也可以是映射鍵/值，值也可以再次映射。
您的具體用例將是這樣的：
ObjectMapper m = new ObjectMapper();
Map<String, Object> input = new HashMap<String, Object>();
input.put( "name", "xyz" );
input.put( "id", "428" );
input.put( "mailId", new String[] { "mailme@mail.com" } );
Map<String, Object> opwarden = new HashMap<String, Object>();
opwarden.put( "number", "132344345" );
opwarden.put( "title", "title" );
Map<String, Object> bundle1 = new HashMap<String, Object>();
bundle1.put( "opwarden", opwarden );
input.put( "bundle1" , bundle1 );
String json = m.writeValueAsString( input );
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