在 Jersey 中注册 SelectableEntityFilteringFeature

我们需要做的就是以这种方式在 ResourceConfig类中注册 SelectableEntityFilteringFeature：

package com.onitroad.jersey;
import org.glassfish.jersey.jackson.JacksonFeature;
import org.glassfish.jersey.message.filtering.SelectableEntityFilteringFeature;
import org.glassfish.jersey.server.ResourceConfig;
public class CustomApplication extends ResourceConfig 
{
	public CustomApplication() 
	{
		packages("com.onitroad.jersey");
		// Configure MOXy Json provider. Comment this line to use Jackson. Uncomment to use MOXy.
        // register(new MoxyJsonConfig().setFormattedOutput(true).resolver());
        // Configure Jackson Json provider. Comment this line to use MOXy. Uncomment to use Jackson.
		register(JacksonFeature.class);

		register(SelectableEntityFilteringFeature.class);
	    property(SelectableEntityFilteringFeature.QUERY_PARAM_NAME, "select");
	}
}

如果你想通过 web.xml文件启用这个特性，那么你可以将该特性添加到提供者类名列表中：

<init-param>
    <param-name>jersey.config.server.provider.classnames</param-name>
    <param-value>
        org.glassfish.jersey.filter.LoggingFilter,
        org.glassfish.jersey.message.filtering.SelectableEntityFilteringFeature,
        org.glassfish.jersey.jackson.JacksonFeature
    </param-value>
</init-param>

要设置查询选择器属性，请使用以下代码：

<init-param>
    <param-name>jersey.config.entityFiltering.selectable.query</param-name>
    <param-value>select</param-value>
</init-param>

测试 SelectableEntityFilteringFeature

• 点击 HTTP GET：http://localhost:8080/JerseyDemos/rest/employees
  响应：

{"employeeList":[ {"id":1,"name":"JackLi Gupta"}, {"id":2,"name":"JackLi Kolenchiskey"}, {"id":3,"name":"Tomm Kameron"}]}

• 点击 HTTP GET：http://localhost:8080/JerseyDemos/rest/employees?select=employeeList,id
  响应：

{"employeeList":[{"id":1},{"id":2},{"id":3}]}

• 点击 HTTP GET：http://localhost:8080/JerseyDemos/rest/employees/1
  响应：

{"id":1,"name":"JackLi Gupta"}

• 点击 HTTP GET：http://localhost:8080/JerseyDemos/rest/employees/1?select=id
  响应：

{"id":1}

• 点击 HTTP GET：http://localhost:8080/JerseyDemos/rest/employees/1?select=name
  响应：

{"name":"JackLi Gupta"}