RESTEasy通过TEXT、XML、JSON进行数据交换

RESTEasy通过TEXT、XML、JSON进行数据交换

1，TEXT格式：

服务器端代码：

@POST
    @Path("format/text")
    @Consumes(MediaType.TEXT_PLAIN)
    public String text(String input) {
        System.out.println(input);
        return input;
    }

客户端代码：

private static void testFormatText() throws Exception {
        String url = URL + "body/format/text";
        ClientRequest request = new ClientRequest(url);
        request.body(MediaType.TEXT_PLAIN, "hello world");
        String returnItem = request.postTarget(String.class);
        System.out.println(returnItem);
    }

2，XML格式：

服务器端代码：

@POST
    @Path("format/xml")
    @Produces(MediaType.APPLICATION_XML)
    @Consumes(MediaType.APPLICATION_XML)
    public MyCustomer xml(MyCustomer input) {
        System.out.println(input);
        return input;
    }

客户端代码：

    private static void testFormatXml() throws Exception {
        String url = URL + "body/format/xml";
        ClientRequest request = new ClientRequest(url);
        MyCustomer customer = new MyCustomer();
        customer.setId(1);
        customer.setFirstName("Bill");
        customer.setLastName("Burke");
        customer.setStreet("263 Clarendon Street");
        request.body(MediaType.APPLICATION_XML, customer);
        MyCustomer returnItem = request.postTarget(MyCustomer.class);
        System.out.println(returnItem);
    }

3，JSON格式：

服务器端代码：

@POST
    @Path("format/json")
    @Produces(MediaType.APPLICATION_JSON)
    @Consumes(MediaType.APPLICATION_JSON)
    public MyCustomer json(MyCustomer input) {
        System.out.println(input);
        return input;
    }

客户端代码：

    private static void testFormatJson() throws Exception {
        String url = URL + "body/format/json";
        ClientRequest request = new ClientRequest(url);
        MyCustomer customer = new MyCustomer();
        customer.setId(1);
        customer.setFirstName("Bill222");
        customer.setLastName("Burke222");
        customer.setStreet("263 Clarendon Street");
        request.body(MediaType.APPLICATION_JSON, customer);
        MyCustomer returnItem = request.postTarget(MyCustomer.class);
        System.out.println(returnItem);
    }

这里注意，在一个方法中不能同时使用Entity对象装载和参数装载方法。所以在代码设计时就要考虑好参数的装载方式。如下代码就会报错：

服务器端：

    @GET
    @POST
    @Path("format/json/{cid}")
    @Consumes({MediaType.APPLICATION_JSON,MediaType.MEDIA_TYPE_WILDCARD})
    public void allParam(MyCustomer input, @FormParam("author") String author,@QueryParam("id") String idStr,@PathParam("cid") String cidStr, MultivaluedMap<String,String> form) {
        System.out.println("input:" + input);
        System.out.println("author:" + author);
        System.out.println("idStr:" + idStr);
        System.out.println("cidStr:" + cidStr);
        System.out.println("form:" + form);
    }

客户端：

    private static void testJsonAndOther()throws Exception {
        String url = URL + "body/format/json/9999099";
        ClientRequest request = new ClientRequest(url);
        MyCustomer customer = new MyCustomer();
        customer.setId(1);
        customer.setFirstName("Bill222");
        customer.setLastName("Burke222");
        customer.setStreet("263 Clarendon Street");
        request.body(MediaType.APPLICATION_JSON, customer);
        request.formParameter("author", "Jerval2");
        request.formParameter("id", 2321232);
        request.formParameter("test", "test2");
        request.queryParameter("id", 232123);
        MyCustomer returnItem = request.postTarget(MyCustomer.class);
        System.out.println(returnItem);
    }

报错信息：

Exception in thread "main" java.lang.RuntimeException: You cannot send both form parameters and an entity body
	at org.jboss.resteasy.client.core.executors.ApacheHttpClient4Executor.loadHttpMethod(ApacheHttpClient4Executor.java:194)
	at org.jboss.resteasy.client.core.executors.ApacheHttpClient4Executor.execute(ApacheHttpClient4Executor.java:107)
	at org.jboss.resteasy.core.interception.ClientExecutionContextImpl.proceed(ClientExecutionContextImpl.java:39)
	at org.jboss.resteasy.plugins.interceptors.encoding.AcceptEncodingGZIPInterceptor.execute(AcceptEncodingGZIPInterceptor.java:40)
	at org.jboss.resteasy.core.interception.ClientExecutionContextImpl.proceed(ClientExecutionContextImpl.java:45)
	at org.jboss.resteasy.client.ClientRequest.execute(ClientRequest.java:443)
	at org.jboss.resteasy.client.ClientRequest.httpMethod(ClientRequest.java:677)
	at org.jboss.resteasy.client.ClientRequest.post(ClientRequest.java:566)
	at org.jboss.resteasy.client.ClientRequest.post(ClientRequest.java:571)
	at org.jboss.resteasy.client.ClientRequest.postTarget(ClientRequest.java:578)
	at com.test.ClientMain.testJsonAndOther(ClientMain.java:98)
	at com.test.ClientMain.main(ClientMain.java:25)

如下修改为如下，则能正常使用：

服务器端：

@GET
    @POST
    @Path("format/json/{cid}")
    @Consumes({MediaType.APPLICATION_JSON,MediaType.MEDIA_TYPE_WILDCARD})
    public void allParam(@FormParam("author") String author,@QueryParam("id") String idStr,@PathParam("cid") String cidStr, MultivaluedMap<String,String> form) {
        System.out.println("author:" + author);
        System.out.println("idStr:" + idStr);
        System.out.println("cidStr:" + cidStr);
        System.out.println("form:" + form);
    }

客户端：

    private static void testJsonAndOther()throws Exception {
        String url = URL + "body/format/json/9999099";
        ClientRequest request = new ClientRequest(url);
        request.formParameter("author", "Jerval2");
        request.formParameter("id", 2321232);
        request.formParameter("test", "test2");
        request.queryParameter("id", 232123);
        MyCustomer returnItem = request.postTarget(MyCustomer.class);
        System.out.println(returnItem);
    }

结果：

author:Jerval2
idStr:232123
cidStr:9999099
form:{id=[2321232], author=[Jerval2], test=[test2]}