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怎么才能快速的开发出带json的android应用。自己定义json对应的具体java beans,用Android自带的Json库解析json是一件很繁琐的事情。所以在这里,我引入一个工具和一个库。
我们使用命令行模式来从json生成javaclasses
https://github.com/joelittlejohn/jsonschema2pojo/releases
为了防止下不了,也可以使用自己的下载地址,国内的地址毕竟快,而且稳定。附上地址:
http://download.csdn.net/detail/feidu804677682/8520253
./jsonschema2pojo --source address --target java-gen
你可以输入—help选项查看其它参数:
./jsonschema2pojo –help
对有的非标准的Json文件,你需要加入-T参数
./jsonschema2pojo --source address --target java-gen -T JSON -a NONE
举例说明:
天气预报的json数据 test.json
{ "weatherinfo": { "city": "珠海", "cityid": "101280701", "temp1": "14℃", "temp2": "19℃", "weather": "多云", "img1": "n1.gif", "img2": "d1.gif", "ptime": "18:00" } }
经过转换之后生成如下实体类 自动生成Weatherinfo.java java文件,都不需要我自己命名,这个类直接拿过来使用会有些错误,将错误去除就可以使用了。
import java.util.HashMap; import java.util.Map; import javax.annotation.Generated; import org.apache.commons.lang.builder.EqualsBuilder; import org.apache.commons.lang.builder.HashCodeBuilder; import org.apache.commons.lang.builder.ToStringBuilder; @Generated("org.jsonschema2pojo") public class Weatherinfo { private String city; private String cityid; private String temp1; private String temp2; private String weather; private String img1; private String img2; private String ptime; private Map<String, Object> additionalProperties = new HashMap<String, Object>(); /** * * @return * The city */ public String getCity() { return city; } /** * * @param city * The city */ public void setCity(String city) { this.city = city; } /** * * @return * The cityid */ public String getCityid() { return cityid; } /** * * @param cityid * The cityid */ public void setCityid(String cityid) { this.cityid = cityid; } /** * * @return * The temp1 */ public String getTemp1() { return temp1; } /** * * @param temp1 * The temp1 */ public void setTemp1(String temp1) { this.temp1 = temp1; } /** * * @return * The temp2 */ public String getTemp2() { return temp2; } /** * * @param temp2 * The temp2 */ public void setTemp2(String temp2) { this.temp2 = temp2; } /** * * @return * The weather */ public String getWeather() { return weather; } /** * * @param weather * The weather */ public void setWeather(String weather) { this.weather = weather; } /** * * @return * The img1 */ public String getImg1() { return img1; } /** * * @param img1 * The img1 */ public void setImg1(String img1) { this.img1 = img1; } /** * * @return * The img2 */ public String getImg2() { return img2; } /** * * @param img2 * The img2 */ public void setImg2(String img2) { this.img2 = img2; } /** * * @return * The ptime */ public String getPtime() { return ptime; } /** * * @param ptime * The ptime */ public void setPtime(String ptime) { this.ptime = ptime; } @Override public String toString() { return ToStringBuilder.reflectionToString(this); } public Map<String, Object> getAdditionalProperties() { return this.additionalProperties; } public void setAdditionalProperty(String name, Object value) { this.additionalProperties.put(name, value); } @Override public int hashCode() { return new HashCodeBuilder().append(city).append(cityid).append(temp1).append(temp2).append(weather).append(img1).append(img2).append(ptime).append(additionalProperties).toHashCode(); } @Override public boolean equals(Object other) { if (other == this) { return true; } if ((other instanceof Weatherinfo) == false) { return false; } Weatherinfo rhs = ((Weatherinfo) other); return new EqualsBuilder().append(city, rhs.city).append(cityid, rhs.cityid).append(temp1, rhs.temp1).append(temp2, rhs.temp2).append(weather, rhs.weather).append(img1, rhs.img1).append(img2, rhs.img2).append(ptime, rhs.ptime).append(additionalProperties, rhs.additionalProperties).isEquals(); } }