如何向 stringbuilder 添加另一个字符串？

Question

I have this part of code which I don't understand correctly. I know that it builds a string out of values from the database. I think it's only the title :

private String createSearchFieldContent(Report report) {
  return createSearchFieldContent(report.getTitle(), report.getDescription());
}

private String createSearchFieldContent(OverrideableStringValue title,
                                        OverrideableStringValue description) {

  StringBuilder builder = new StringBuilder(getValue(title));
  if (StringUtils.isNotBlank(getValue(description))) {
    builder.append(" ").append(getValue(description));
  }
  String searchTerm = StringUtils.replaceAll(builder.toString(), "\n", " ");
  return unaccent(searchTerm);
}

I have another value which I'd like to add to the searchTerm . It's stored in report.getOwner() . How is it possible that I can build a new searchTerm which includes the title , description and owner ?

Thanks!

Answer 1

Try below code:

private String createSearchFieldContent(Report report) {
  return createSearchFieldContent(report.getTitle(), report.getDescription(), report.getOwner());
}

private String createSearchFieldContent(OverrideableStringValue title,
                                        OverrideableStringValue description, OverrideableStringValue owner) {

  StringBuilder builder = new StringBuilder(getValue(title));
  if (StringUtils.isNotBlank(getValue(description))) {
    builder.append(" ").append(getValue(description));
  }
  if (StringUtils.isNotBlank(getValue(owner))) {
    builder.append(" ").append(getValue(owner));
  }
  String searchTerm = StringUtils.replaceAll(builder.toString(), "\n", " ");
  return unaccent(searchTerm);
}

In the above code, we are passing the owner attribute to the createSearchFieldContent method like the other two, then the owner attribute is appended to string builder object just like description.

Answer 2

You can assign new data to searchTerm:

searchTerm = StringUtils.replaceAll(builder.toString(), "\n", " ")

becomes

String part2 = "something you want to add"; 
searchTerm = searchTerm + part2;

Or you could use the StringBuilder to append new data to

builder.append("new data")
builder.append("newer data")

This gets added to the StringBuilder which is incorporated in the string value of searchTerm.