它支持的类型转换如下所示：
| 源类型 | 目标类型 |
| String | boolean, Boolean; byte, Byte; char, Character; double, Double; float, Float; int, Integer; long, Long; short, Short; java.math.BigDecimal; java.math.BigInteger; java.util.Date; java.sql.Date; java.sql.Time; java.sql.Timestamp; enum |
| String[] | 上述各类型的数组、java.util.List、java.util.Set。 比如“int[]”、“boolean[]”、“Short[]”、List<Integer>、List<Date>、Set<Integer>、Set<Date> |
| Map<String, ?> | JavaBean; List<JavaBean>; Set<JavaBean>; Map<SomeKeyType, JavaBean> |
对于Map<String, ?>类型的源对象，它的关键字必须符合下面的访问符表达式格式：
accessor[.accessor ...]
这里，accessor可以是下面这些语义和字面值：
比如，它可以将下面的映射表：
"id" -> "1" "name" -> "jack" "listChildren.id" -> ["11", "12"] "listChildren.name" -> ["tom", "mary"] "setChildren.id" -> ["11", "12"] "setChildren.name" -> ["tom", "mary"] "arrayChildren.id" -> ["11", "12"] "arrayChildren.name" -> ["tom", "mary"] "mapChildren.key0.id" -> "11" "mapChildren.key0.name" -> "tom" "mapChildren.key1.id" -> "22" "mapChildren.key1.name" -> "mary"转换为：
package org.somePkg; class User{ private Integer id; private String name; private List<User> listChildren; private Set<User> setChildren; private User[] arrayChildren; private Map<String, User> mapChildren; ... } 类型的对象，或者将： "id" -> ["1","2","3"] "name" -> ["jack","tom","cherry"] "0.listChildren.id" -> ["10","11"] "0.listChildren.name" -> ["jack10","jack11"] "1.setChildren.0.id" -> "20" "1.setChildren.0.name" -> "tom20" "1.setChildren.1.id" -> "21" "1.setChildren.1.name" -> "tom21" "2.arrayChildren.0.id" -> "30" "2.arrayChildren.0.name" -> "cherry30" "2.arrayChildren.1.id" -> "31" "2.arrayChildren.1.name" -> "cherry31" "2.mapChildren.key0.id" -> "30" "2.mapChildren.key0.name" -> "cherry30" "2.mapChildren.key1.id" -> "31" "2.mapChildren.key1.name" -> "cherry31"转换为：
List<User> Set<User> User[]类型的对象。
你也可以通过 {@linkplain #addConverter(Type,Type,Converter)}方法为它添加更多辅助转换器，使其支持更多的类型转换。
另外，如果目标类型为String，而你没有添加某类型对象到String类型的辅助转换器，那么它将返回此对象的toString()结果。
| |