Question

我正在从文件中读取数据，我需要用Java Bean值替换占位符。

我尝试过StrSubstitutor来映射值，但是没有用，也许我的方法不正确，占位符的声明正确，请建议我正确的方法

Class Test{
    String firstName;
    Request request;
}

class Request {
    String requestNumber;
}

setValues(){
    String template ="Dear ${test.firstname},Your Request number is ${test.request.requestNumber}.";
    Test test= test;
    Map<String, String> valuesMap = new HashMap<>();
    valuesMap.put("test.firstname",test.getFirstName());
    valuesMap.put("test.request.requestNumber",test.getRequest().getRequestNumber());
    StrSubstitutor StrSubstitutor = new StrSubstitutor(valuesMap);
    String mailContent = StrSubstitutor.replace(template );
}

输出应为

尊敬的名字，您的请求号是1234567。

Answer 1

您基本上可以将每个键替换为值

String template ="Dear ${test.firstname},Your Request number is ${test.request.requestNumber}.";
Test test = ...;

Map<String, String> valuesMap = new HashMap<>();
valuesMap.put("test.firstname",test.getFirstName());
valuesMap.put("test.request.requestNumber",test.getRequest().getRequestNumber());

for (Map.Entry<String, String> entry : map.entrySet()) {
    template = template.replace("${" + entry.getKey() + "}", entry.getValue());
}

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