※JSON
package script
import groovy.json.JsonOutput
import groovy.json.JsonSlurper
def json = JsonOutput.toJson([1, 'a', 3.2, [a: 1]]) // 轉成 JSON 字串
println json
// println JsonOutput.prettyPrint(json) // 印出格式化後的 JSON 字串
List<Object> a = new JsonSlurper().parse(json.getBytes()) // 將 JSON 字串轉成物件
println a
class Animal {
Integer id
String name
}
def animalList = [ new Animal(id: 1, name: 'tiger'),
new Animal(id: 2, name: 'turtle') ]
def animalJson = JsonOutput.toJson(animalList)
println animalJson
// println JsonOutput.prettyPrint(animalJson)
List<Animal> la = new JsonSlurper().parse(animalJson.getBytes())
println la
※
※XML
final def xml = '''<html> <head> <title>Test</title> </head> <body> <h1>YEAH</h1> <ul> <li class=\'aaa\'>AA</li> <li class=\'bbb\'>BB</li> <li class=\'ccc\'>CC</li> </ul> <ul> <li class=\'add\'>AD</li> <li class=\'aee\'>AE</li> <li class=\'aff\'>AF</li> </ul> </body> </html> '''
※
※
def rtn = new XmlSlurper().parseText(xml) // 根只能一個，也就是最外層的 html 只能有一個
println rtn.name() // html
println rtn.body[0].h1[0].text() // YEAH
println rtn.body.h1.text() // YEAH
println rtn.body.ul.li[1].text() // B
println rtn.body.ul.li[1]["@class"] // bbb
println rtn.body.ul.li[1].'@class' // bbb
println rtn.body.ul.li[1].@class // bbb
println rtn.body.ul.li.text() // AABBCCADAEAF
println rtn.body.ul.li.@class // aaabbbcccaddaeeaff
def list = []
rtn.body.ul.each { ul ->
ul.li.each {
list << it
}
println()
}
println list // [AA, BB, CC, AD, AE, AF]
※取屬性有三種寫法
※depthFirst、children()
def filter = rtn.body.ul.depthFirst().findAll {
it.@class in ['aaa', 'add']
}/*.collect { //如果想輸出非 text，可再加 collect
it.@class
}*/
println "filter= $filter" [AA, AD]
def filter0 = rtn.body.ul.children().findAll {
println it
}
println filter0
def filter1 = rtn.body.ul.'*'.find {
println it.@class // aaa
println it.name() // li
it
}
println "filter1= $filter1" // AA
def filter2 = rtn.body.ul.'**'.find {
println it.@class //
println it.name() // ul
it
}
println "filter2= $filter2" // AABBCC
def filter3 = rtn.body.ul.'*'.findAll {
println it.@class // aaa\r\nli\r\nbbb\r\nli...
println it.name() // li
it
}
println "filter3= $filter3" // AABBCCADAEAF
def filter4 = rtn.body.ul.'**'.findAll {
println it.@class //
println it.name() // ul\r\naaa\r\nli\r\nbbb...
it
}
println "filter4= $filter4" // [AABBCC, AA, BB, CC, ADAEAF, AD, AE, AF]
※depthFirst() 可用 '**' 代替；children() 可用 '*' 代替
※產生 XML
import groovy.xml.MarkupBuilder
//<aaa display="true">
// <bbb xxx="x" ppp="1">123</bbb>
// <bbb xxx="o" ppp="2">
// 456
// <ddd>sub</ddd>
// </bbb>
// <ccc xxx="x" ppp="3">789</ccc>
// <ccc xxx="o" ppp="4">012</ccc>
//</aaa>
def sw = new StringWriter()
def xml = new MarkupBuilder(sw)
xml.aaa(display: 'true') {
bbb(xxx: 'x', ppp: '1', value: 123)
bbb(xxx: 'o', ppp: '2', value: 456) {
ddd(value: 'sub')
}
ccc(xxx: 'x', ppp: '3', value: 789)
ccc(xxx: 'o', ppp: '4', value: '012')
}
println sw
※
※使用bean，產生XML
class Aaa {
String display
List<Bbb> b
List<Ccc> c
}
class Bbb {
String xxx
String ppp
String value
Ddd d
}
class Ccc {
String xxx
String ppp
String value
}
class Ddd {
String value
}
def d = new Ddd(value: 'sub')
def b1 = new Bbb(xxx: 'x', ppp: 1, value: 123)
def b2 = new Bbb(xxx: 'o', ppp: 2, value: 456, d: d)
def c1 = new Bbb(xxx: 'x', ppp: 3, value: 789)
def c2 = new Bbb(xxx: 'o', ppp: 4, value: '012')
def aaa = new Aaa(display: true, b: [b1, b2], c: [c1, c2])
def sw = new StringWriter()
def xml = new MarkupBuilder(sw)
xml.aaa(display: aaa.display) {
for (def bc : aaa) {
/*
for (def bd : bc.b) {
bbb(xxx: bd.xxx, ppp: bd.ppp, value: bd.value) {
if (bd.d != null) {
ddd(value: bd.d.value)
}
}
}
*/
aaa.b.each { ab ->
bbb(xxx: ab.xxx, ppp: ab.ppp, value: ab.value) {
ab.d.each {
ddd(value: it.value)
}
}
}
bc.c.each {
ccc(xxx: it.xxx, ppp: it.ppp, value: it.value)
}
}
}
println sw
※註解是我一開始用閉包時，ddd 這一層包不進去 bbb，所以只好使用 for 迴圈的方式，後來發現 aaa.b 不用 it 才有辦法做到
※IO
假設已有一個檔案 xxx.txt，內容是：123
abc
456
def
※
def file = new File('xxx.txt')
println file.getText()
println file.readLines() // [123, abc, 456, def]
println file.readLines('UTF-8') // [123, abc, 456, def]
file.each {
println it
}
file.eachLine { content, num ->
println "$num $content"
}
println file.withReader {
def buffer = new char[2]
it.read(buffer)
buffer
}
def out = new File('ooo.txt')
out.withWriter {
String enter = System.getProperty('line.separator')
it.append('abc').append(enter).append('123').append(enter)
it.append('def').append(enter).append('456')
}
def copyFile(File src, File dest) {
if (!src.exists()) {
src.createNewFile()
}
src.withReader { r ->
def lines = r.readLines()
dest.withWriter { w ->
lines.eachWithIndex { String content, int i ->
w.append("$i $content" + System.getProperty('line.separator'))
}
}
}
println 'copy success'
}
copyFile(new File('ooo.txt'), new File('copy.txt'))
※
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