overrideinjectabletest.java

resetful样式的ws样例,一种面向资源的webservices服务

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package com.sun.jersey.impl.inject;

import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.api.model.Parameter;
import com.sun.jersey.spi.service.ComponentContext;
import com.sun.jersey.spi.service.ComponentProvider.Scope;
import static java.lang.annotation.ElementType.CONSTRUCTOR;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

import java.io.IOException;

import javax.ws.rs.GET;
import javax.ws.rs.Path;

import com.sun.jersey.impl.AbstractResourceTester;
import com.sun.jersey.spi.inject.Injectable;
import com.sun.jersey.spi.inject.InjectableProvider;
import java.net.URI;
import java.util.LinkedHashMap;
import java.util.Map;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.UriBuilder;
import javax.ws.rs.ext.Provider;

public class OverrideInjectableTest extends AbstractResourceTester {
    
    public OverrideInjectableTest(String testName) {
        super( testName );
    }
    
    @Provider
    public static class QueryParamInjectableProvider implements 
            InjectableProvider<QueryParam, Parameter> {        
        public Scope getScope() {
            return Scope.PerRequest;
        }
        
        public Injectable<Map<String, String>> getInjectable(ComponentContext ic, 
                QueryParam a, Parameter c) {
            if (Map.class != c.getParameterClass())
                return null;
            
            final String name = c.getSourceName();
            return new Injectable<Map<String, String>>() {
                public Map<String, String> getValue(HttpContext c) {
                    String value = c.getUriInfo().getQueryParameters().getFirst(name);

                    Map<String, String> m = new LinkedHashMap<String, String>();
                    String[] kvs = value.split(",");
                    for (String kv : kvs) {
                        String[] nv = kv.split("=");
                        m.put(nv[0].trim(), nv[1].trim());
                    }
                    
                    return m;
                }
            };
        }
    }
        
    @Path("/")
    public static class MethodInjected {
        @GET
        public String get(@QueryParam("l") Map<String, String> kv) throws Exception {
            String v = "";
            for (Map.Entry<String, String> e : kv.entrySet())
                v += e.getKey() + e.getValue();
            return v;
        }                
    }
    
    public void testMethodInjected() throws IOException {                
        initiateWebApplication(MethodInjected.class, QueryParamInjectableProvider.class);
                
        URI u = UriBuilder.fromPath("").
                        queryParam("l", "1=2, 3=4, 5=6").build();
        assertEquals("123456", resource("/").uri(u).get(String.class));   
    }
}