基于guavaString转ListMap ListMap转String

基于guava转换String，List/Map
Joiner用于List、Map转String
Splitter用于String转List、Map
本文只列出简单用法，Joiner、Splitter中还有很多包括去重复等操作
List–>String

List<String> names = Lists.newArrayList("John", "虚幻的云朵", "Adam", "Tom");String result = Joiner.on(",").join(names); assertEquals(result, "John,虚幻的云朵,Adam,Tom");

String–>List

String input = "apple - banana - orange";List<String> result = Splitter.on("-").trimResults().splitToList(input);

Map–>String

String to List/Map Splitter List/Map to String Joiner Map<String, Integer> salary = Maps.newHashMap(); salary.put("John", 1000); salary.put("虚幻的云朵", 1500); String result = Joiner.on(" , ").withKeyValueSeparator(" = ") .join(salary);

String–>Map

String input = "John=first,Adam=second"; Map<String, String> result = Splitter.on(",") .withKeyValueSeparator("=") .split(input); assertEquals("first", result.get("John")); assertEquals("second", result.get("Adam"));

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