模糊查询 防止 sql注入
mysqlmybatis 环境：1>. 处理sql特殊字符 {"*","%","_"} --> 替换为 "/*","/%","/_"
2>. sql 中处理，定义‘/’ 为转义字符
public abstract> private static final long serialVersionUID = 1L;
@Transient // 用于注释pojo对象中的属性，被注释的属性将成为短暂的，不会持久化。
protected Boolean escapeChar;// 是否包含转义字符
protected String keyword; // 模糊查询关键字
public String getKeyword() {
return keyword == null ? null : keyword.trim();
}
public void setKeyword(String keyword) {
this.keyword = keyword == null ? null : keyword.trim();
}
public Boolean getEscapeChar() {
this.getNewKeyword();
return escapeChar;
}
public void setEscapeChar(Boolean escapeChar) {
this.escapeChar = escapeChar;
}
// 处理sql特殊字符 {"*","%","_"} --> 替换为 "/*","/%","/_"
private void getNewKeyword() {
if (escapeChar == null) {
escapeChar = false;
}
if (StringUtils.isNotEmpty(keyword) && !escapeChar) {
Pattern p1 = Pattern.compile("\\*|%|_");
Matcher m1 = p1.matcher(keyword);
StringBuffer buf = new StringBuffer();
while (m1.find()) {
m1.appendReplacement(buf, "/" + m1.group());
}
m1.appendTail(buf);
String newkeyword = buf.toString();
if (!keyword.equals(newkeyword)) {
this.setEscapeChar(true);
this.setKeyword(newkeyword);
}
}
}
}
and (
name like CONCAT("%",#{keyword},"%") escape '/'
or
uname like CONCAT("%",#{keyword},"%") escape '/'
)
页:
[1]