我正在使用JWT
解码以下Apache Commons Codec
。我们怎么做到这一点?
eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ0ZXN0Iiwicm9sZXMiOiJST0xFX0FETUlOIiwiaXNzIjoibXlzZ
WxmIiwiZXhwIjoxNDcxMDg2MzgxfQ.1EI2haSz9aMsHjFUXNVz2Z4mtC0nMdZo6bo3-x-aRpw
这应该检索Header
,Body
和Signature
部分。什么代码?
干得好:
import org.apache.commons.codec.binary.Base64;
@Test
public void testDecodeJWT(){
String jwtToken = "eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ0ZXN0Iiwicm9sZXMiOiJST0xFX0FETUlOIiwiaXNzIjoibXlzZWxmIiwiZXhwIjoxNDcxMDg2MzgxfQ.1EI2haSz9aMsHjFUXNVz2Z4mtC0nMdZo6bo3-x-aRpw";
System.out.println("------------ Decode JWT ------------");
String[] split_string = jwtToken.split("\\.");
String base64EncodedHeader = split_string[0];
String base64EncodedBody = split_string[1];
String base64EncodedSignature = split_string[2];
System.out.println("~~~~~~~~~ JWT Header ~~~~~~~");
Base64 base64Url = new Base64(true);
String header = new String(base64Url.decode(base64EncodedHeader));
System.out.println("JWT Header : " + header);
System.out.println("~~~~~~~~~ JWT Body ~~~~~~~");
String body = new String(base64Url.decode(base64EncodedBody));
System.out.println("JWT Body : "+body);
}
输出如下:
------------ Decode JWT ------------
~~~~~~~~~ JWT Header ~~~~~~~
JWT Header : {"alg":"HS256"}
~~~~~~~~~ JWT Body ~~~~~~~
JWT Body : {"sub":"test","roles":"ROLE_ADMIN","iss":"myself","exp":1471086381}
这是一种非包导入方式:
java.util.Base64.Decoder decoder = java.util.Base64.getUrlDecoder();
String[] parts = jwtToken.split("\\."); // split out the "parts" (header, payload and signature)
String headerJson = new String(decoder.decode(parts[0]));
String payloadJson = new String(decoder.decode(parts[1]));
//String signatureJson = new String(decoder.decode(parts[2]));
REGARDLESS(org.apache.commons.codec.binary.Base64的替代方案)...您可能还想将这些json片段推送到pojo。
然后你可以把那些json片段变成pojo。
标题是“动态的”,因此您可能希望转换为键值对(在Java中也称为“Map”)
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.Map;
public class JwtTokenHeaders {
private final Map<String, Object> jsonMap; // = new HashMap<String, Object>();
public JwtTokenHeaders(String jsonString) {
ObjectMapper mapper = new ObjectMapper();
//String jsonString = "{\"name\":\"JavaInterviewPoint\", \"department\":\"blogging\"}";
//Map<String, Object> jsonMap = new HashMap<String, Object>();
try {
// convert JSON string to Map
this.jsonMap = mapper.readValue(jsonString,
new TypeReference<Map<String, String>>() {
});
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
@Override
public String toString() {
return org.apache.commons.lang3.builder.ToStringBuilder.reflectionToString(this);
}
}
有效载荷更加静态,所以你可以映射到一个pojo .....你可以带json并在这里创建一个匹配的pojo:
http://pojo.sodhanalibrary.com/
那样做..(使用在线工具创建MyPojo)
这样的事情:
//import com.fasterxml.jackson.databind.DeserializationFeature;
//import com.fasterxml.jackson.databind.ObjectMapper;
ObjectMapper mapper = new ObjectMapper();
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
MyPojo tp = mapper.readValue(payloadJson, MyPojo.class);
如果http://pojo.sodhanalibrary.com/将来不再存在,只需上网搜索“在线json to pojo”,你就可能找到一些东西。