json zu java class

[Bolle52]

hallo zusammen,

ich habe grad das problem, dass ich keine ahnung habe, wie ich aus folgendem json eine java klasse machen soll:

{"expand":"schema,names","startAt":0,"maxResults":50,"total":3,"issues":[{"expand":"editmeta,renderedFields,transitions,changelog,operations","id":"10519","self":"url","key":"ENTERPRISE-319","fields":{"summary":"test"}},{"expand":"editmeta,renderedFields,transitions,changelog,operations","id":"10518","self":"url","key":"ENTERPRISE-318","fields":{"summary":"test"}},{"expand":"editmeta,renderedFields,transitions,changelog,operations","id":"10515","self":url","key":"ENTERPRISE-315","fields":{"summary":"As a Developer ..,."}}]}

wenn mir da jemand helfen kann wäre toll.

MfG

Jan

 

[kay73]

Nimm Jackson, damit ist es ein Zweizeiler.
JacksonInFiveMinutes - FasterXML Wiki

Das JSON, das Du gepostet hast, ist nicht valide; kannst Du mit diesem Online-Tool sehen:
JSON Formatter & Validator

Irgendwo hinten musst Du ein

:url"

gegen

:"url"

ersetzen, dann klappt es.

Du brauchst diese beiden JARs im Klassenpfad:
http://repo1.maven.org/maven2/org/codehaus/jackson/jackson-core-asl/1.9.9/jackson-core-asl-1.9.9.jar
http://repo1.maven.org/maven2/org/c...mapper-asl/1.9.9/jackson-mapper-asl-1.9.9.jar

import java.io.IOException;
import java.util.List;

import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;

class Field {
	String summary;

	public String getSummary() {
		return summary;
	}

	public void setSummary(String summary) {
		this.summary = summary;
	}
	
}

class Issue {
	String expand;
	String id;
	String self;
	String key;
	Field  fields;
	public String getExpand() {
		return expand;
	}
	public void setExpand(String expand) {
		this.expand = expand;
	}
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public String getSelf() {
		return self;
	}
	public void setSelf(String self) {
		this.self = self;
	}
	public String getKey() {
		return key;
	}
	public void setKey(String key) {
		this.key = key;
	}
	public Field getFields() {
		return fields;
	}
	public void setFields(Field fields) {
		this.fields = fields;
	}
}

class MyDataItem{
	String expand;
	int startAt;
	int maxResults;
	int total;
	List<Issue> issues;
	public String getExpand() {
		return expand;
	}
	public void setExpand(String expand) {
		this.expand = expand;
	}
	public int getStartAt() {
		return startAt;
	}
	public void setStartAt(int startAt) {
		this.startAt = startAt;
	}
	public int getMaxResults() {
		return maxResults;
	}
	public void setMaxResults(int maxResults) {
		this.maxResults = maxResults;
	}
	public int getTotal() {
		return total;
	}
	public void setTotal(int total) {
		this.total = total;
	}
	public List<Issue> getIssues() {
		return issues;
	}
	public void setIssues(List<Issue> issues) {
		this.issues = issues;
	}
};
public class JSONDemo {

	public static void main(String[] args) throws JsonParseException, JsonMappingException, IOException {
		String json = "{\"expand\":\"schema,names\",\"startAt\":0,\"maxResults\":50,\"total\":3,\"issues\":[{\"expand\":\"editmeta,renderedFields,transitions,changelog,operations\",\"id\":\"10519\",\"self\":\"url\",\"key\":\"ENTERPRISE-319\",\"fields\":{\"summary\":\"test\"}},{\"expand\":\"editmeta,renderedFields,transitions,changelog,operations\",\"id\":\"10518\",\"self\":\"url\",\"key\":\"ENTERPRISE-318\",\"fields\":{\"summary\":\"test\"}},{\"expand\":\"editmeta,renderedFields,transitions,changelog,operations\",\"id\":\"10515\",\"self\":\"url\",\"key\":\"ENTERPRISE-315\",\"fields\":{\"summary\":\"As a Developer ..,.\"}}]}";
		ObjectMapper mapper = new ObjectMapper(); 
		MyDataItem item = mapper.readValue(json, MyDataItem.class);
	}	
}

 

[Bolle52]

vielen dank! du hast mir sehr geholfen