Java书签 # 多层List集合的Json字符串转Java对象
楔子：无处可去和无处可回，这和自由完全是两回事。《理由》
1.书签引短
多层List集合的Json字符串转Java对象代码实现方案。
2.解决方案
需要使用到：net.sf.json.JSONObject
public static void main(String[] args) {
// 将JSON字符串转换成JSON对象
JSONObject jsonBean = JSONObject.fromObject(jsonObjectStr);
// 添加JSON对象中出现的需要转换的对象到Map中
Map classMap = new HashMap<>();
classMap.put("result", ResponsePageInfoBO.class);
classMap.put("recipeList", RecipeResponseBO.class);
classMap.put("recipeDrugDetailList", RecipeDrugResponseBO.class);
// 将JSON对象转换成JAVA对象
ReturnInfo returnInfo = (ReturnInfo) JSONObject.toBean(jsonBean, ReturnInfo.class, classMap);
System.out.println(JSON.toJSONString(returnInfo));
} 多层List集合的Json字符串转Java对象中涉及到的实体对象：
注意：Java对象的属性名要与Json字符串中出现的字段名称保持一致。
1）ResponsePageInfoBO
public class ResponsePageInfoBO implements Serializable {
private List recipeList;
private Integer prePage;
private Integer pages;
private Integer nextPage;
private Boolean hasNextPage;
private Integer navigateLastPage;
private Integer navigatePages;
private Integer[] navigatePageNums;
private Integer size;
private Boolean isFirstPage;
private Integer startRow;
private Boolean hasPreviousPage;
private Integer navigateFirstPage;
private Integer total;
private Integer endRow;
private Integer pageNum;
private Integer pageSize;
private Boolean isLastPage;
public List getRecipeList() {
return recipeList;
}
public void setRecipeList(List recipeList) {
this.recipeList = recipeList;
}
// 此处省略get/set
......
} 2）RecipeResponseBO
public class RecipeResponseBO implements Serializable {
private List recipeDrugDetailList;
private String name;
private Integer age;
private Integer gender;
private String phoneNumber;
private String storeName;
private String doctorName;
private String symptom;
private String illness;
public List getRecipeDrugDetailList() {
return recipeDrugDetailList;
}
public void setRecipeDrugDetailList(List recipeDrugDetailList) {
this.recipeDrugDetailList = recipeDrugDetailList;
}
public String getName() {
return name;
}
// 此处省略get/set
......
} 3）RecipeDrugResponseBO
public class RecipeDrugResponseBO implements Serializable {
private String drugName;
private Integer num;
private String unit;
private String spec;
private String perNum;
private String perUnit;
private Integer dose;
private String usage;
private Integer usageFrequencyCode;
private String usageFrequencyName;
public String getDrugName() {
return drugName;
}
// 此处省略get/set
......
}
测试数据：
public static final String jsonObjectStr = "{\n" +
" \"result\": {\n" +
" \"endRow\": 1, \n" +
" \"firstPage\": false, \n" +
" \"hasNextPage\": false, \n" +
" \"hasPreviousPage\": false, \n" +
" \"lastPage\": false, \n" +
" \"recipeList\": [\n" +
" {\n" +
" \"age\": 32, \n" +
" \"doctorName\": \"陈医生\", \n" +
" \"recipeDrugDetailList\": [\n" +
" {\n" +
" \"dose\": 1, \n" +
" \"drugName\": \"板蓝根颗粒\", \n" +
" \"num\": 1, \n" +
" \"perNum\": \"1\", \n" +
" \"perUnit\": \"包\", \n" +
" \"spec\": \"2\", \n" +
" \"unit\": \"盒\", \n" +
" \"usage\": \"口服\", \n" +
" \"usageFrequencyCode\": 1, \n" +
" \"usageFrequencyName\": \"每天三次\"\n" +
" },\n" +
" {\n" +
" \"dose\": 1, \n" +
" \"drugName\": \"四季感冒灵\", \n" +
" \"num\": 1, \n" +
" \"perNum\": \"1\", \n" +
" \"perUnit\": \"包\", \n" +
" \"spec\": \"2\", \n" +
" \"unit\": \"盒\", \n" +
" \"usage\": \"口服\", \n" +
" \"usageFrequencyCode\": 1, \n" +
" \"usageFrequencyName\": \"每天三次\"\n" +
" }\n" +
" ], \n" +
" \"gender\": 1, \n" +
" \"illness\": \"感冒\", \n" +
" \"name\": \"谈笑\", \n" +
" \"phoneNumber\": \"19999999999\", \n" +
" \"storeName\": \"测试店\", \n" +
" \"symptom\": \"感冒\"\n" +
" }\n" +
" ], \n" +
" \"navigateFirstPage\": 1, \n" +
" \"navigateLastPage\": 1, \n" +
" \"navigatePages\": 8, \n" +
" \"navigatePageNums\": [\n" +
" 1\n" +
" ], \n" +
" \"nextPage\": 0, \n" +
" \"pageNum\": 1, \n" +
" \"pageSize\": 15, \n" +
" \"pages\": 1, \n" +
" \"prePage\": 0, \n" +
" \"size\": 1, \n" +
" \"startRow\": 1, \n" +
" \"total\": 1\n" +
" }, \n" +
" \"ok\": true\n" +
"}";测试结果：
{"ok":true,"result":{"endRow":1,"firstPage":false,"hasNextPage":false,"hasPreviousPage":false,"lastPage":false,"navigateFirstPage":1,"navigateLastPage":1,"navigatePageNums":[1],"navigatePages":8,"nextPage":0,"pageNum":1,"pageSize":15,"pages":1,"prePage":0,"recipeList":[{"age":32,"doctorName":"陈医生","gender":1,"illness":"感冒","name":"谈笑","phoneNumber":"19999999999","recipeDrugDetailList":[{"dose":1,"drugName":"板蓝根颗粒","num":1,"perNum":"1","perUnit":"包","spec":"2","unit":"盒","usage":"口服","usageFrequencyCode":1,"usageFrequencyName":"每天三次"},{"dose":1,"drugName":"四季感冒灵","num":1,"perNum":"1","perUnit":"包","spec":"2","unit":"盒","usage":"口服","usageFrequencyCode":1,"usageFrequencyName":"每天三次"}],"storeName":"测试店","symptom":"感冒"}],"size":1,"startRow":1,"total":1}}