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Gson如何實現序列化內部類?針對這個問題,這篇文章詳細介紹了相對應的分析和解答,希望可以幫助更多想解決這個問題的小伙伴找到更簡單易行的方法。
1 Gson處理成員內部類
1.1 編寫核心類
MainApp:
package com.yiidian.gson; import com.google.gson.Gson; public class MainApp { public static void main(String args[]) { Student student = new Student(); student.setRollNo(1); Student.Name name = student.new Name(); name.firstName = "Mahesh"; name.lastName = "Kumar"; student.setName(name); Gson gson = new Gson(); //序列化 String jsonString = gson.toJson(student); System.out.println(jsonString); //反序列化 student = gson.fromJson(jsonString, Student.class); System.out.println("Roll No: "+ student.getRollNo()); System.out.println("First Name: "+ student.getName().firstName); System.out.println("Last Name: "+ student.getName().lastName); String nameString = gson.toJson(name); System.out.println(nameString); name = gson.fromJson(nameString,Student.Name.class); System.out.println(name.getClass()); System.out.println("First Name: "+ name.firstName); System.out.println("Last Name: "+ name.lastName); } } class Student { private int rollNo; private Name name; public int getRollNo() { return rollNo; } public void setRollNo(int rollNo) { this.rollNo = rollNo; } public Name getName() { return name; } public void setName(Name name) { this.name = name; } //成員內部類 class Name { public String firstName; public String lastName; } }
1.2 運行測試
2 Gson處理靜態內部類
2.1 編寫核心類
MainApp:
package com.yiidian.gson; import com.google.gson.Gson; public class MainApp { public static void main(String args[]) { Student student = new Student(); student.setRollNo(1); Student.Name name = new Student.Name(); name.firstName = "Mahesh"; name.lastName = "Kumar"; student.setName(name); Gson gson = new Gson(); String jsonString = gson.toJson(student); System.out.println(jsonString); student = gson.fromJson(jsonString, Student.class); System.out.println("Roll No: "+ student.getRollNo()); System.out.println("First Name: "+ student.getName().firstName); System.out.println("Last Name: "+ student.getName().lastName); String nameString = gson.toJson(name); System.out.println(nameString); name = gson.fromJson(nameString,Student.Name.class); System.out.println(name.getClass()); System.out.println("First Name: "+ name.firstName); System.out.println("Last Name: "+ name.lastName); } } class Student { private int rollNo; private Name name; public int getRollNo() { return rollNo; } public void setRollNo(int rollNo) { this.rollNo = rollNo; } public Name getName() { return name; } public void setName(Name name) { this.name = name; } //靜態內部類 static class Name { public String firstName; public String lastName; } }
2.2 運行測試
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