书接上文和上上文：
在经历过一些波折之后，总算是把JsonPath工具类的封装类写好了，时间仓促。没有太严格的测试，等有机会我再用Groovy进行单元测试框架spock写一些单测来验证一下。
工具类的语言Groovy，有点不必多说了，相信使用Java技术栈的同学读起来应该不会有障碍。另外我把官方的API当做类注释写出来了。
有两个关于verify类的方法，这个主要是为了验证用的，涉及到Groovy重载操作符，是专门写的一个提供给Groovy脚本的验证功能类，还有就是为开源测试服务增加功能储备。
代码如下：
package com.fun.utils
import com.alibaba.fastjson.JSONObject
import com.fun.base.exception.ParamException
import com.fun.frame.SourceCode
import com.jayway.jsonpath.JsonPath
import com.jayway.jsonpath.JsonPathException
import org.slf4j.Logger
import org.slf4j.LoggerFactory
/**下面是例子,官方文档地址:https://github.com/json-path/JsonPath/blob/master/README.md
* $.store.book[*].author The authors of all books
* $..author All authors
* $.store.* All things, both books and bicycles
* $.store..price The price of everything
* $..book[2] The third book
* $..book[-2] The second to last book
* $..book[0,1] The first two books
* $..book[:2] All books from index 0 (inclusive) until index 2 (exclusive)
* $..book[1:2] All books from index 1 (inclusive) until index 2 (exclusive)
* $..book[-2:] Last two books
* $..book[2:] Book number two from tail
* $..book[?(@.isbn)] All books with an ISBN number
* $.store.book[?(@.price < 10)] All books in store cheaper than 10
* $..book[?(@.price <= $['expensive'])] All books in store that are not "expensive"
* $..book[?(@.author =~ /.*REES/i)] All books matching regex (ignore case)
* $..* Give me every thing
* $..book.length() The number of books
*
*
* min() Provides the min value of an array of numbers Double
* max() Provides the max value of an array of numbers Double
* avg() Provides the average value of an array of numbers Double
* stddev() Provides the standard deviation value of an array of numbers Double
* length() Provides the length of an array Integer
* sum() Provides the sum value of an array of numbers Double
* min() 最小值 Double
* max() 最大值 Double
* avg() 平均值 Double
* stddev() 标准差 Double
* length() 数组长度 Integer
* sum() 数组之和 Double
* == left is equal to right (note that 1 is not equal to '1')
* != left is not equal to right
* < left is less than right
* <= left is less or equal to right
* > left is greater than right
* >= left is greater than or equal to right
* =~ left matches regular expression [?(@.name =~ /foo.*?/i)]
* in left exists in right [?(@.size in ['S', 'M'])]
* nin left does not exists in right
* subsetof 子集 [?(@.sizes subsetof ['S', 'M', 'L'])]
* anyof left has an intersection with right [?(@.sizes anyof ['M', 'L'])]
* noneof left has no intersection with right [?(@.sizes noneof ['M', 'L'])]
* size size of left (array or string) should match right
* empty left (array or string) should be empty
*/
class JsonUtil extends SourceCode {
private static Logger logger = LoggerFactory.getLogger(JsonUtil.class)
/**
* 用户构建对象,获取verify对象
*/
private JSONObject json
private JsonUtil(JSONObject json) {
this.json = json
}
static JsonUtil getInstance(JSONObject json) {
new JsonUtil(json)
}
Verify getVerify(String path) {
Verify.getInstance(this.json, path)
}
/**
* 获取string对象
* @param path
* @return
*/
String getString(String path) {
def object = get(path)
object == null ? EMPTY : object.toString()
}
/**
* 获取int类型
* @param path
* @return
*/
int getInt(String path) {
changeStringToInt(getString(path))
}
/**
* 获取boolean类型
* @param path
* @return
*/
int getBoolean(String path) {
changeStringToBoolean(getString(path))
}
/**
* 获取long类型
* @param path
* @return
*/
int getLong(String path) {
changeStringToLong(getString(path))
}
/**
* 获取double类型
* @param path
* @return
*/
double getDouble(String path) {
changeStringToDouble(getString(path))
}
/**
* 获取list对象
* @param path
* @return
*/
List getList(String path) {
get(path) as List
}
/**
* 获取匹配对象,类型传参
* 这里不加public IDE会报错
* @param path
* @param tClass
* @return
*/
public <T> T getT(String path, Class<T> tClass) {
try {
get(path) as T
} catch (ClassCastException e) {
logger.warn("类型转换失败!", e)
null
}
}
/**
* 获取匹配对象
* @param path
* @return
*/
Object get(String path) {
logger.debug("匹配对象:{},表达式:{}", json.toString(), path)
if (json == null || json.isEmpty()) ParamException.fail("json为空或者null,参数错误!")
try {
JsonPath.read(this.json, path)
} catch (JsonPathException e) {
logger.warn("jsonpath:{}解析失败,json值", json.toString(), path, e)
null
}
}
}
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