【开发笔记】- 输出String字符串使其文本对齐

需求

• 一段文本做每64个字节换行处理，并添加对应的头尾注释

代码实现

public static String certFormat(String code, String beginTitle, String endTitle){
　　StringBuffer sb = new StringBuffer(cert);
　　for (int i = 0; i < cert.length(); i++) {
　　　　char c = cert.charAt(i);
　　　　if(i%64 ==0 && i != 0){
　　　　　　sb.insert(i,"
	");
　　　　}
　　}
　　sb.insert(0, beginTitle+"
	");
　　sb.insert(sb.length(), "
	"+endTitle);
　　return sb.toString();
}

输出文本

    -----BEGIN CERTIFICATE REQUEST-----
    MIIBQjCB6QIBADCBhjELMAkGA1UEBhMCQ04xEDAOBgNVBAgMB0JlaUppbmcxEDAO
    BgNVBAcMB0JlaUppbmcxEDAOBgNVBAoMB0luZm9TZWMxDDAKBgNVBAsMA1ImRD
    EPMA0GA1UEAwwGc2VydmVyMSIwIAYJKoZIhvcNAQkBFhNsaWprQGluZm9zZWMu
    Y29tLmNuMFkwEwYHKoZIzj0CAQYIKoEcz1UBgi0DQgAEvpAS1JSWB+ywk4g/1T
    r/iVBSfQOmVHwxKHBVBaCqjb5m9fsNYOE+X2gPy6OyV6WRI7G80CCQIRruMne4
    +NC66qAAMAoGCCqBHM9VAYN1A0gAMEUCIQCnfYW9672h7WO7BcOom8cNJp16a1
    t5M8hLQTcPhktQMQIgZ8RM9L4iTDkNwvIzwvD4K18hhJ6nZEdgI4rviEv5fpc=
    -----END CERTIFICATE REQUEST-----