Java 如何使MOXy仅在一行上输出以节省空间
为了解决另一个问题,我从使用Jersey转到EclipseLink MOXy,从Sun JAXB 2.1.12创建的JAXB创建的对象模型生成JSON。我注意到的一个区别是输出的格式 那件球衣输出Java 如何使MOXy仅在一行上输出以节省空间,java,json,jersey,eclipselink,moxy,Java,Json,Jersey,Eclipselink,Moxy,为了解决另一个问题,我从使用Jersey转到EclipseLink MOXy,从Sun JAXB 2.1.12创建的JAXB创建的对象模型生成JSON。我注意到的一个区别是输出的格式 那件球衣输出 {"artist-list":{"offset":0,"count":1,"artist":[{"score":"100","type":"Group","id":"4302e264-1cf0-4d1f-aca7-2a6f89e34b36","name":"Farming Incident","sor
{"artist-list":{"offset":0,"count":1,"artist":[{"score":"100","type":"Group","id":"4302e264-1cf0-4d1f-aca7-2a6f89e34b36","name":"Farming Incident","sort-name":"Incident, Farming","gender":"male","country":"AF","disambiguation":"the real one","ipi-list":{"ipi":["1001","1002"]},"life-span":{"begin":"1999-04","ended":"true"},"tag-list":{"tag":[{"count":5,"name":"thrash"},{"count":11,"name":"güth"}]}}]}}
但是莫西给了
"count" : "1",
"offset" : "0",
"artist" : [ {
"id" : "4302e264-1cf0-4d1f-aca7-2a6f89e34b36",
"type" : "Group",
"score" : "100",
"name" : "Farming Incident",
"sort-name" : "Incident, Farming",
"gender" : "male",
"country" : "AF",
"disambiguation" : "the real one",
"ipis" : [ "1001", "1002" ],
"life-span" : {
"begin" : "1999-04",
"ended" : "true"
},
"tags" : [ {
"count" : "5",
"name" : "thrash"
}, {
"count" : "11",
"name" : "güth"
} ]
} ]
}
莫西要漂亮得多:
但是,通过Json提供数据的原因之一是为了减少传输带宽,这样就可以让MOXy生成所有一行数据,并且在每行数据周围没有额外的空间:?默认情况下将Json封送到一行。要获取格式化输出,需要在封送拆收器上设置以下属性:
根
jaxb.properties
演示
以下代码演示如何指定格式化输出:
package forum11450509;
import java.util.*;
import javax.xml.bind.*;
import org.eclipse.persistence.jaxb.JAXBContextProperties;
public class Demo {
public static void main(String[] args) throws Exception {
Map<String, Object> properties = new HashMap<String, Object>(2);
properties.put(JAXBContextProperties.MEDIA_TYPE, "application/json");
properties.put(JAXBContextProperties.JSON_INCLUDE_ROOT, false);
JAXBContext jc = JAXBContext.newInstance(new Class[] {Root.class}, properties);
Root root = new Root();
root.setFoo("ABC");
root.setBar(123);
System.out.println("One Line:");
Marshaller marshaller = jc.createMarshaller();
marshaller.marshal(root, System.out);
System.out.println("\nFormatted:");
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(root, System.out);
}
}
package org.example;
import java.util.*;
import javax.ws.rs.core.Application;
import org.eclipse.persistence.jaxb.rs.MOXyJsonProvider;
public class CustomerApplication extends Application {
@Override
public Set<Class<?>> getClasses() {
HashSet<Class<?>> set = new HashSet<Class<?>>(1);
set.add(ExampleService.class);
return set;
}
@Override
public Set<Object> getSingletons() {
MOXyJsonProvider moxyJsonProvider = new MOXyJsonProvider();
moxyJsonProvider.setFormattedOutput(true);
}
}
JAX-RS
MOXyJsonProvider也有相同的行为,请参见:
一行
默认情况下,当您在JAX-RS应用程序中包括MOXyJsonProvider时,输出将编组在一行上:
package org.example;
import java.util.*;
import javax.ws.rs.core.Application;
import org.eclipse.persistence.jaxb.rs.MOXyJsonProvider;
public class CustomerApplication extends Application {
@Override
public Set<Class<?>> getClasses() {
HashSet<Class<?>> set = new HashSet<Class<?>>(2);
set.add(MOXyJsonProvider.class);
set.add(CustomerService.class);
return set;
}
}
啊,我应该看到这一点,我在看我的initialcontext方法,而不是我的marshaller初始化,禁用了marshaller.JAXB_格式化的_输出,现在works@Blaise我有个问题。通过在JAXB.properties文件中提供javax.xml.bind.context.factory=org.eclipse.persistence.JAXB.JAXBContextFactory条目,我指定moxy作为JAXB提供者。我没有为json输出指定moxyjsonprovider。在我的例子中,将使用什么来提供json输出?如果我的理解有误,请纠正我。@user2186831-这要看情况而定。没有适用于所有环境的标准JSON绑定提供程序,因此您将获得所使用环境的默认值。例如,在GlassFish 4中,默认值为MOXy:
package forum11450509;
import java.util.*;
import javax.xml.bind.*;
import org.eclipse.persistence.jaxb.JAXBContextProperties;
public class Demo {
public static void main(String[] args) throws Exception {
Map<String, Object> properties = new HashMap<String, Object>(2);
properties.put(JAXBContextProperties.MEDIA_TYPE, "application/json");
properties.put(JAXBContextProperties.JSON_INCLUDE_ROOT, false);
JAXBContext jc = JAXBContext.newInstance(new Class[] {Root.class}, properties);
Root root = new Root();
root.setFoo("ABC");
root.setBar(123);
System.out.println("One Line:");
Marshaller marshaller = jc.createMarshaller();
marshaller.marshal(root, System.out);
System.out.println("\nFormatted:");
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(root, System.out);
}
}
One Line
{"bar":123,"foo":"ABC"}
Formatted:
{
"bar" : 123,
"foo" : "ABC"
}
package org.example;
import java.util.*;
import javax.ws.rs.core.Application;
import org.eclipse.persistence.jaxb.rs.MOXyJsonProvider;
public class CustomerApplication extends Application {
@Override
public Set<Class<?>> getClasses() {
HashSet<Class<?>> set = new HashSet<Class<?>>(2);
set.add(MOXyJsonProvider.class);
set.add(CustomerService.class);
return set;
}
}
package org.example;
import java.util.*;
import javax.ws.rs.core.Application;
import org.eclipse.persistence.jaxb.rs.MOXyJsonProvider;
public class CustomerApplication extends Application {
@Override
public Set<Class<?>> getClasses() {
HashSet<Class<?>> set = new HashSet<Class<?>>(1);
set.add(ExampleService.class);
return set;
}
@Override
public Set<Object> getSingletons() {
MOXyJsonProvider moxyJsonProvider = new MOXyJsonProvider();
moxyJsonProvider.setFormattedOutput(true);
}
}