Simple JSON parsing using GSON throwing IllegalArgumentException

1 comment

1. here what i believe is your mistake, what you should be doing is that instead of using JsonObject you should be using proper dto, like this …

   package com.example.helppeople.dto;
   
   public class Author {
   
       private Integer ID;
       private String username;
       private String name;
       private String firstName;
       private String lastName;
       private String nickname;
       private String slug;
       private String URL;
       private String avatar;
       private String description;
       private String registered;
       private Meta meta;
       public Author(Integer iD, String username, String name,
               String firstName, String lastName, String nickname,
               String slug, String uRL, String avatar, String description,
               String registered, Meta meta) {
           super();
           ID = iD;
           this.username = username;
           this.name = name;
           this.firstName = firstName;
           this.lastName = lastName;
           this.nickname = nickname;
           this.slug = slug;
           URL = uRL;
           this.avatar = avatar;
           this.description = description;
           this.registered = registered;
           this.meta = meta;
       }
       public Integer getID() {
           return ID;
       }
       public void setID(Integer iD) {
           ID = iD;
       }
       public String getUsername() {
           return username;
       }
       public void setUsername(String username) {
           this.username = username;
       }
       public String getName() {
           return name;
       }
       public void setName(String name) {
           this.name = name;
       }
       public String getFirstName() {
           return firstName;
       }
       public void setFirstName(String firstName) {
           this.firstName = firstName;
       }
       public String getLastName() {
           return lastName;
       }
       public void setLastName(String lastName) {
           this.lastName = lastName;
       }
       public String getNickname() {
           return nickname;
       }
       public void setNickname(String nickname) {
           this.nickname = nickname;
       }
       public String getSlug() {
           return slug;
       }
       public void setSlug(String slug) {
           this.slug = slug;
       }
       public String getURL() {
           return URL;
       }
       public void setURL(String uRL) {
           URL = uRL;
       }
       public String getAvatar() {
           return avatar;
       }
       public void setAvatar(String avatar) {
           this.avatar = avatar;
       }
       public String getDescription() {
           return description;
       }
       public void setDescription(String description) {
           this.description = description;
       }
       public String getRegistered() {
           return registered;
       }
       public void setRegistered(String registered) {
           this.registered = registered;
       }
       public Meta getMeta() {
           return meta;
       }
       public void setMeta(Meta meta) {
           this.meta = meta;
       }
       @Override
       public String toString() {
           return "Author [ID=" + ID + ", username=" + username + ", name="
                   + name + ", firstName=" + firstName + ", lastName="
                   + lastName + ", nickname=" + nickname + ", slug=" + slug
                   + ", URL=" + URL + ", avatar=" + avatar + ", description="
                   + description + ", registered=" + registered + ", meta="
                   + meta + "]";
           }
   
   
   }
   
   
   package com.example.helppeople.dto;
   
   public class Meta {
    private Links links;
   
   public Meta(Links links) {
       super();
       this.links = links;
   }
   
   public Links getLinks() {
       return links;
   }
   
   public void setLinks(Links links) {
       this.links = links;
   }
   
   @Override
   public String toString() {
       return "Meta [links=" + links + "]";
       }
   
   }
   
   package com.example.helppeople.dto;
   
   public class Links {
   private String self;
   private String archives;
   
   
   
   public Links(String self, String archives) {
       super();
       this.self = self;
       this.archives = archives;
   }
   
   public String getSelf() {
       return self;
   }
   
   public void setSelf(String self) {
       this.self = self;
   }
   
   public String getArchives() {
       return archives;
   }
   
   public void setArchives(String archives) {
       this.archives = archives;
   }
   
   @Override
   public String toString() {
       return "Links [self=" + self + ", archives=" + archives + "]";
   }
   
   
   
   }
   

   you can use the following site to generate the dto stucture pojo, this is a very simple examples of how you should be using GSON example 1, example 2, example 3

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