Quickly launch http requests in projects

I. Adding Dependency

<dependency>
    <groupId>cn.gjing</groupId>
    <artifactId>tools-httpclient</artifactId>
    <version>1.0.2</version>
</dependency>

II. Project Use

1. HTTP request (GET case)

public static void main(String[] args) {    
    HttpClient client = new HttpClient();
    Map<String, String> map = new HashMap<>(16);
    map.put("a", "parameter a");
    map.put("b", "parameter b");
    //Send http requests
    String result = client.get("http://127.0.0.1:8080/test", map, String.class);
    System.out.println(result);
}

2. HTTPS request (POST case)

public static void main(String[] args) {    
    HttpClient client = new HttpClient();
    Map<String, String> map = new HashMap<>(16);
    map.put("a", "parameter a");
    map.put("b", "parameter b");
    //Send https requests
    Map result = client.post("https://127.0.0.1:8080/test", map, Map.class);
    System.out.println(result.toString());
}

3. DELETE Case

public static void main(String[] args) {   
    HttpClient client = new HttpClient(); 
    ResultBean result = client.delete("http://127.0.0.1:8080/test/1", ResultBean.class);
    System.out.println(result.toString());
}

4. PUT case

public static void main(String[] args) {   
    HttpClient client = new HttpClient(); 
    Integer result = client.put("https://127.0.0.1:8080/test/2", Integer.class);
    System.out.println(result);
}

HttpClient parameter description

null can be transmitted directly to any parameter other than the required parameter when it is not needed.

It is better to set the return type of the response result to be consistent with the target method, otherwise the conversion exception may occur, as follows:

• Target method

@GetMapping("/test")
public Integer test() {
    return 1111;
}

• Caller

public static void main(String[] args) {
    HttpClient client = new HttpClient();
    Map result = client.get("http://127.0.0.1:8080/test", Map.class);
    System.out.println(result.toString());
}

Because the target method returns an Integer type, not a key or value type, a conversion exception occurs when the caller receives using Map.

IV. UrlUtil Tool Class

1,urlAppend

Url splicing, return the result format such as: http://xxx/param1/param2

    public static void main(String[] args) {
        String url = "http://127.0.0.1:8080/";
        Object[] param = {1, 2, 3, 4};
        UrlUtil.urlAppend(url, param);
    }

2,paramUnicodeSort

Parameters are sorted by Unicode code code of field names from small to large (dictionary order), and the result format is as follows: a = parameter 1 & B = parameter 2

    public static void main(String[] args) {
        Map<String, Object> map = new HashMap<>(16);
        map.put("a", "Parameter 1");
        map.put("b", "Parameter 2");
        UrlUtil.paramUnicodeSort(map, false, false);
    }

Parameter description

3,urlParamToMap

Converting the parameters after the URL address to a map

    public static void main(String[] args) {
        String url = "http://127.0.0.1:8080?a=2&b=2";
        UrlUtil.urlParamToMap(url);
    }

Project source code can be viewed at GitHUb: tools-httpclient