怎么用java对象表示复杂的json？

问题描述

有种json对象要大量使用，所以想封装成对象，

{tooltip : { trigger: ’axis’, axisPointer: {type: ’cross’,}, formatter: '{b}: {c})'},xAxis :{ type : ’category’, data : [’Mon’, ’Tue’, ’Wed’, ’Thu’, ’Fri’, ’Sat’, ’Sun’], axisTick: {alignWithLabel: true}},yAxis :{ type : ’value’},series :{ type:’bar’, barWidth: ’80%’, data:[10, 52, 200, 334, 390, 330, 220]}}

现在的想法是一层对象再套一层tooltip，xAxis，series对象，可是完全偏离目标了，本来就只是一个辅助对象。有没有什么好的做法？

问题解答

虽然并没有太理解你的问题，不过针对json去写一些类表示这个json的结构，是有点烦...不过有个神器可以帮你简单解决这个问题，哈哈

IDEA里有个神器叫GsonFormat

这个插件处理json十分好用，不管json有多复杂，只要json格式正确，自动帮你生成类，哈哈

一般使用步骤是这样的：

新建一个类，比如叫Test，这个类就是你最后要使用的类

然后Alt+s 打开GsonFormat的快捷键

把要转换的json字符串粘贴进去，点ok

4.确认转换后的格式和类型，基本默认都可以的，直接点ok即可

类生成：

public class Test { /** * tooltip : {'trigger':'axis','axisPointer':{'type':'cross'},'formatter':'{b}: {c})'} * xAxis : {'type':'category','data':['Mon','Tue','Wed','Thu','Fri','Sat','Sun'],'axisTick':{'alignWithLabel':true}} * yAxis : {'type':'value'} * series : {'type':'bar','barWidth':'80%','data':[10,52,200,334,390,330,220]} */ private TooltipBean tooltip; private XAxisBean xAxis; private YAxisBean yAxis; private SeriesBean series; public TooltipBean getTooltip() {return tooltip; } public void setTooltip(TooltipBean tooltip) {this.tooltip = tooltip; } public XAxisBean getXAxis() {return xAxis; } public void setXAxis(XAxisBean xAxis) {this.xAxis = xAxis; } public YAxisBean getYAxis() {return yAxis; } public void setYAxis(YAxisBean yAxis) {this.yAxis = yAxis; } public SeriesBean getSeries() {return series; } public void setSeries(SeriesBean series) {this.series = series; } public static class TooltipBean {/** * trigger : axis * axisPointer : {'type':'cross'} * formatter : {b}: {c}) */private String trigger;private AxisPointerBean axisPointer;private String formatter;public String getTrigger() { return trigger;}public void setTrigger(String trigger) { this.trigger = trigger;}public AxisPointerBean getAxisPointer() { return axisPointer;}public void setAxisPointer(AxisPointerBean axisPointer) { this.axisPointer = axisPointer;}public String getFormatter() { return formatter;}public void setFormatter(String formatter) { this.formatter = formatter;}public static class AxisPointerBean { /** * type : cross */ private String type; public String getType() {return type; } public void setType(String type) {this.type = type; }} } public static class XAxisBean {/** * type : category * data : ['Mon','Tue','Wed','Thu','Fri','Sat','Sun'] * axisTick : {'alignWithLabel':true} */private String type;private AxisTickBean axisTick;private List<String> data;public String getType() { return type;}public void setType(String type) { this.type = type;}public AxisTickBean getAxisTick() { return axisTick;}public void setAxisTick(AxisTickBean axisTick) { this.axisTick = axisTick;}public List<String> getData() { return data;}public void setData(List<String> data) { this.data = data;}public static class AxisTickBean { /** * alignWithLabel : true */ private boolean alignWithLabel; public boolean isAlignWithLabel() {return alignWithLabel; } public void setAlignWithLabel(boolean alignWithLabel) {this.alignWithLabel = alignWithLabel; }} } public static class YAxisBean {/** * type : value */private String type;public String getType() { return type;}public void setType(String type) { this.type = type;} } public static class SeriesBean {/** * type : bar * barWidth : 80% * data : [10,52,200,334,390,330,220] */private String type;private String barWidth;private List<Integer> data;public String getType() { return type;}public void setType(String type) { this.type = type;}public String getBarWidth() { return barWidth;}public void setBarWidth(String barWidth) { this.barWidth = barWidth;}public List<Integer> getData() { return data;}public void setData(List<Integer> data) { this.data = data;} }}回答2：

import java.util.HashMap;import java.util.Map;import com.alibaba.fastjson.JSON;public class MM { class Tooltip {private String trigger;private Map<String, String> axisPointer;private String formatter;public String getTrigger() { return trigger;}public void setTrigger(String trigger) { this.trigger = trigger;}public Map<String, String> getAxisPointer() { return axisPointer;}public void setAxisPointer(Map<String, String> axisPointer) { this.axisPointer = axisPointer;}public String getFormatter() { return formatter;}public void setFormatter(String formatter) { this.formatter = formatter;} } public static void main(String[] args) {MM mm = new MM();Tooltip tooltip = mm.new Tooltip();tooltip.setTrigger('axis');tooltip.setAxisPointer(new HashMap<String, String>(){{ this.put('type', 'cross');}});tooltip.setFormatter('{b}: {c})');Map<String, Object> map = new HashMap<String, Object>();map.put('tooltip', tooltip);System.out.println(JSON.toJSONString(map)); }}

输出:

{'tooltip':{'axisPointer':{'type':'cross'},'formatter':'{b}: {c})','trigger':'axis'}}